This story starts towards the end of Volume 2.


What is destiny?

Is it something you are trapped by?

Or is it something you are meant to escape from?


"...Again Vali?"

"Come on Kaii! Until I meet the Sekiryuutei you are my sparring rival." A handsome young man with dark silver hair and blue eyes replied.

'Nice to know I'm just a sparring partner.' Kaii thought.

Kaii was supposedly abandoned as a child, and was found by the leader of the Grigori, an organization that beings known as Fallen Angels belonged to. He was put in the care of one of the "Cadre", Shemhazai. Cadre were basically leader class Fallen Angels.

It was rather self-explanatory what a Fallen Angel was. An Angel that either sinned and fell from Heaven or someone born from another Fallen Angel.

The world of the supernatural was very real. There were monsters, Angels, Devils, Gods, Dragons and many other beings. Somewhere around 95% of humans were unaware of this, and the other 5% had no intentions to tell the rest. It was better this way, as many things beyond human explanation happened.

Kaii was put under Shemhazai's care because most of the other Cadre were busy, already had children, or had no interest in it. Such as Baraqiel, who had a wife and daughter to look after. ...That had changed some time back, but that's another story for another time.

There was also Azazel, the leader of the Grigori, also known as the Governor General, but he was actually looking after Vali who found himself in a similar situation.

It was discovered years ago that Kaii was a hybrid of a Fallen Angel, and Devil, meaning he had a Devil mother, and a Fallen Angel father (or vice versa). He was very skilled at manipulating light into weapons such as spears and swords, thanks to his Fallen Angel blood, and along with a few others aside from the Cadre, would be considered elite in the Grigori. However, the Devil blood that flows through him was more dominant, and thus would be classified as a Devil before a Fallen Angel, despite his appearance. Additionally, he would be somewhere close to a High Class Devil in strength, like Vali.

Vali was a mystery to everyone aside from Azazel. All anyone knew was that he was half Devil, half human.

Anyways, unlike what you would think, instead of having both wings Kaii had 4 pairs of jet black Fallen Angel wings, and no Devil wings. Devil wings normally looked like large bat wings protruding out of their back.

A rather odd trait about him however, was that his aura had a special "effect" on people. It basically caused one's body to develop terrible chills and in extreme cases cause panic. It was visually intimidating too, being blood red in color which also altered his light weapons to be that color as well.

...Continuing this info dump, Kaii was average sized for someone his age, 17, with a toned physique. He had slightly shaggy, but also slightly straight black hair that reached his neck along with some strands pointing upwards on top of his head. Kaii also had red eyes that had slit pupils. Along with Vali, he was quite handsome.

His usual attire is the exact same as Vali (courtesy of Azazel) albeit with different colors. A black leather battle jacket over a v-neck shirt that was red along with gray pants that had black leather protectors over them, and black combat styled boots for men.

To sum it up, Kaii wasn't weak by any means. The thing is, it always seemed as if there's someone stronger than you in this world...

"If you don't do something then I'll just end this quickly!" Vali exclaimed.

Kaii knew what was coming, whether he liked it or not, he got ready for Vali to use his cheat code-like mode.

"I, who is about to awaken"

"Am the Heavenly Dragon who has taken the principles of supremacy from God"

"I envy the "infinite" and I pursue the "dream""

"I shall become the White Dragon of Domination"

"And I shall take you to the limits of white paradise!"

(Juggernaut Drive!)

A voice yelled from inside of Vali.

Vali suddenly became wrapped in a blinding white light that seemed limitless, as his aura began multiplying. Kaii had to close his eyes, otherwise he would have probably burned his eyes out... literally.

When he reopened his eyes, Vali stood on the floor of the large and empty stadium that was used as their "sparring room". However, what was different was that Vali was in a white armor that had golden spikes and glowing blue wings. It looked like a miniature robot Dragon basically. This was known as Juggernaut Drive, a trump card of sorts for Vali.

Vali charged towards Kaii like the battle maniac he was, but Kaii was ready as he pulled out his pairs of wings and began to fly circles around Vali.

SWISH!

Vali's head started to spin, as Kaii was zooming around him, while jumping off high walls.

Kaii suddenly stopped, and formed a bow made of pure light.

!

He unleashed a rapid fire of light arrows right at Vali!

...

All to no avail though because Juggernaut Drive's thick armor protected against such measly attacks.

Kaii tried to step back but-

...He hit the wall.

SMACK

He quite literally facepalmed.

"I fucked up!"

"Don't care!" Vali shouted.

Kaii looked at him with half lidded eyes, giving up.

TAP!

(Divide!)

Kaii dropped to the floor and panted heavily knowing fully what happened.

Vali was the Hakuryuukou; the White Dragon Emperor.

Which meant he was born with the Sacred Gear, a Longinus called "Divine Dividing". Longinus were Sacred Gears capable of killing Gods, and there were only a few of them. Anyways, it was a very useful Sacred Gear, as the Heavenly Dragon, Albion was sealed in it.

There were two "Heavenly Dragons". They were Dragons with powers that rivaled God and Satans themselves. Even surpassing some. Heavenly Dragon class is considered one of the highest possible power tiers, so it was quite formidable to say the least. There were two Heavenly Dragons: Ddraig the Welsh Dragon, and Albion the Vanishing Dragon.

In the past, these two Dragons fought a fierce battle, which was eventually interrupted by the armies of the Angels, Fallen Angels and Devils during their own respective war. In a fit of rage, the two attacked the armies and their leaders. In the end, the two Dragons lost their bodies and were sealed into Sacred Gears.

Similarly to Albion, Ddraig was sealed into a Longinus class Sacred Gear, called the Boosted Gear.

When Vali's Sacred Gear said "(Divide!)"it meant Kaii's power was cut in half with the physical contact and given to Vali. But he could only use it once every 10 seconds, and he could only hold so much.

As the Hakuryuukou, Vali was "destined" to fight with his rival the Sekiryuutei; the Red Dragon Emperor who had the Boosted Gear. The two Sacred Gear were polar opposites.

Sacred Gears were a very interesting matter in the world. Azazel had countless years of research poured into them, and still had hardly any progress.

They were known as God's Artifacts. God of the Bible has bestowed these weapons only to humans, for unknown reasons. All that's known is that they were partially made to enact miracles on Earth.

Many influential and powerful people in human history have secretly had one. Despite being so, Sacred Gear users had many weaknesses, none more than the fact that if one had their Sacred Gear removed... death was the penalty.

Sacred Gears came in many shapes, and with many powers. The highest tier of them were the Longinus.

Although, it was possible for half-breeds to have them if they were at least partially human, or other circumstances. For example, if a human were to be born with one, and was reincarnated into a Devil through "Evil Pieces".

Evil Pieces were chess pieces, used to resurrect someone as a servant for a Devil master. They were usually High Class and Ultimate Class Devils.

'Vali is getting really impatient lately to fight the Sekiryuutei...' Kaii thought.

Another thing he thought of was that Vali was lately leaving at random times and sometimes not coming back for days at a time.

This was intensified slightly by the fact that Kaii didn't trust people that much, due to events from his past that he and a few others knew about.

As such, he wanted to hide some of his abilities from most people. Even Azazel didn't know what his "trump card" was. Only his personal little team.

Unlike Vali he didn't care about pride, because he guaranteed that Vali's pride will be his downfall someday. But in reality nobody really could try to predict Kaii, that's always his advantage, deceiving people. This would end up biting him in the ass much later on though.

"That's enough for me Vali. I really don't like fighting you when you use that cheap mode. Then again if you didn't have it where would you be?" Kaii mused with a hint of sarcasm.

"Say what you want, I'm still stronger than you." Vali countered.

"Whatever." Kaii threw up his arm while walking away.


"Yo, Azazel." Kaii greeted as he walked into a luxurious looking room. It was one of Azazel's rooms in the headquarters of the Fallen Angels. The Grigori, which was stationed in the Fallen Angel territory of the Underworld. The Underworld was to put it bluntly: "hell". It's where the Fallen Angels and Devils naturally resided.

To go further into detail, the Grigori was an organization by Azazel and the Fallen Angels who fell with him long ago in the past. It was not limited to Fallen Angels however. Orphans like Kaii and Vali, Sacred Gear wielders and many others.

Building upon what was said before about the Heavenly Dragons, there was indeed a war between Angels, Fallen Angels and Devils.

This was almost thousands of years ago, but as one would expect the three sides got into a conflict, that escalated into a huge war.

Devils in particular had a disadvantage because both Angels and Fallen Angels could use their weapons to light to attack and basically smite the Devils. Light weapons were deadly poison to them, and were their biggest weakness next to stuff like holy water.

However, the first side to retreat from the war was in fact the Fallen Angels, after they lost a good portion of their forces aside from leaders. After that, Azazel had become more peaceful and didn't like to fight much anymore.

The war in the end left all sides with irreplaceable casualties.

The Fallen Angels lost a large percentage of their population.

The Devils lost their original leaders, the Satans: Lucifer, Beelzebub, Leviathan and Asmodeus.

And worst of all: the Angels lost God. Yes, the very one who created them had died during the war, under strange circumstances where he suddenly weakened.

As for how Kaii felt about this, it was pretty simple for someone his age. War sounded like no fun, so of course he wouldn't be into that. He did like fighting at times and had a bad habit of getting into it like Vali, but he had more self-restraint than him. All in all, he was more laid back with the situation, and was actually on good terms with people from both of the other factions.

Since then, there have been incidents between the factions, and unfortunately most of those accidents came from the Fallen Angels' side.

A recent incident happened in the town Kuoh in Japan...

...A tall man appearing to be in his twenties's with an average build, black hair, golden bangs and black goatee turned around in his chair to look at Kaii. He had purple colored eyes.

"Oh, Kaii what did you need?" The man, Azazel asked.

"After that last spar with Vali I got wondering about the current Sekiryuutei, do you know who or where he or she is?"

"Yeah." Azazel made a file appear via a magic circle. "His name is Issei Hyoudou and attends Kuoh Academy in Japan. An incident occurred as I sent a team to keep an eye on him for his Sacred Gear, but they decided to start some stuff in Gremory territory with him and ended up killing him. The next heiress to the Gremory clan, Rias Gremory reincarnated him as her pawn it seems."

In other words, some Fallen Angels who went off the rails decided to eliminate him, rather than going through the trouble of watching him. Also, the town Kuoh was under the watch of one of the larger Devil houses, Gremory. Their next heiress, Rias Gremory, was someone Kaii had heard about, but never directly met. From what he heard though, he completely understood everything about her and how she worked.

"Oh wow that's a shame, it seems the lower ranked Fallen Angels are acting up a lot recently. Anything else?" Kaii asked.

"Oh that's just the beginning, get this... the one who betrayed us, Raynare, thought it was just a basic Twice Critical Sacred Gear, so she never finished the job and then had the nerve to attempt to remove the Sacred Gear "Twilight Healing" from a nun who happened to be friends with Issei Hyoudou! I'll skip the boring stuff but he kicked her ass with just a few boosted attacks!"

"Doesn't surprise me really... Raynare was not the brightest one around here. She's dead, I'm assuming?"

"Of course. But that's not all, apparently the Gremory and Phenex families had some arranged marriage between Rias and some boy from the Phenex clan so they battled in a Rating Game to see the outcome. Of course the Sekiryuutei made it interesting but he really stood no chance against a Phenex with barely any training. As a matter of fact, tomorrow night is the engagement party in the Underworld. You wanna go? Of course I can't but you can."

A Rating Game was simply a competition between two Devils with a peerage of servants. In many ways it resembled chess.

Kaii crossed his arms and closed his eyes for a minute, then opened them and sighed. "Why not I guess? Whenever a Longinus is involved, something crazy is sure to follow."

"Think so? From what I've seen of the boy I would say he's got something up his sleeve for the Phenex." Azazel said with a sly grin.

"Who's the boy from Phenex?"

"Riser Phenex."

Kaii's right eye twitched at hearing that name. The two had never personally met, but from a few Rating Games of his that he saw, he could see that Riser was cocky due to being immortal. He descends from the Phenex clan that inherited the power of the legendary Phoenix and its instant regeneration of body parts.

"Hou, well tell me the outcome, I got stuff to do. Tamiel wants me to attend one of his business meetings..." Azazel replied with a sad face.

"Sucks to be you now. Anyways, I'll be off in the morning so if Shemhazai asks where I am, just say training. I would much prefer him not to know about this. He has a way with punishing people..." Kaii shivered terribly.

"I got you covered."

"Thanks Azazel." Kaii said as he disappeared into a magic circle.


On the day of the engagement party...

A blood red magic circle appeared in a royal-looking bedroom in a colossal mansion that belonged to the Gremory family in the Underworld.

In the room, a handsome young man who appeared to be in his early twenties's with shoulder length crimson hair and blue-green was sitting in a chair relaxing. This was Sirzechs Lucifer, who used to be the heir to the Gremory house.

So he was Rias Gremory's older brother by blood, but for various reasons was selected to be the Maou Lucifer.

Humans knew them as Satans. They were four individuals picked to be leaders of the Underworld, with the titles of Lucifer, Beelzebub, Leviathan and Asmodeus.

Unlike the previous ones, the current ones were not of royal Devil blood. The original Maou's bloodlines had died out following the aftermath of the last war in the Underworld.

Now, Vali's existence was kept a secret for some reason by Azazel. But Kaii was known by all Fallen Angels and known by select few Devils, such as the Maou.

They didn't mind him being a hybrid and Serafall Leviathan actually believed he could be one of the necessary pillars to actual peace between some of the factions.

"Hello Kaii-kun, is there something you need?" Sirzechs asked in a polite tone.

"Yes, and also I apologize for dropping in without notice. Isn't Rias having an engagement party tonight?"

Sirzechs looked a little shocked that he knew, but wrote it off.

The Devils didn't know about Kaii's power, and they had no clue he was allied with the Grigori. He lied to them and said he was from an independent Extra Devil family. Abaddon in particular.

"Yes actually... I'm not exactly thrilled about who she must marry though..." Sirzechs said with a sigh.

Kaii crossed his arms. "You got a plan?"

Sirzechs nodded his head. "I was going to have Grayfia drop off an invitation to Issei Hyoudou, her new Pawn, and see what he can do. He's the Sekiryuutei you know."

Grayfia was his wife.

"You think he can actually win? Through Balance Breaker maybe?"

Sirzechs scratched his head. "How do you know about Balance Breaker?"

Balance Breaker, also known as the Forbidden Move, was the evolved form of Sacred Gears where their full power could be released.

A Longinus such as Issei's Boosted Gear would immensely spike in power with a Balance Breaker.

Vali's Juggernaut Drive was almost a by-product of Balance Breaker, although it was something exclusive to his Divine Dividing and the Boosted Gear that unleashed the hidden power of the Heavenly Dragons at a cost.

Azazel hypothesized that Balance Breakers are a bug in the system created by God of the Bible, and literally meant what it is. It can upset the balance of the world with ridiculous means.

Kaii started to sweat bullets. "Uh... well I was watching the game and I just kind of just knew about Balance Breakers through common knowledge."

Sirzechs nodded. "I suppose that does make sense."

Good thing he such an airh- easy going guy.

"Well I need to have Grayfia send this, so I'm going to prepare. Oh, I'm guessing you came here to get an invitation?"

Kaii tilted his head. "You sure are good at reading my mind. So, could I?"

"Consider it done."

Sirzechs made a paper appear from a magic circle and pointed at the time listed on it. "It's at this time. I'll be going now."

He quickly hurried out of the room... almost seeming panicked.

Well that was to be expected, Grayfia was the one with the balls in their relationship.

Kaii looked at the paper and sighed. "Guess I should go kill some time."


Kaii walked down a sidewalk in the town that Rias and Issei were from: Kuoh.

This wasn't his first time visiting the town actually. A friend of his who also happened to be in the Grigori was attending Kuoh Academy's college division. That was a story for a later date though.

"What to do, what to do..." He wondered as he passed by some people.

He closed his eyes and cleared his mind.

'I sense two really small auras coming from a few blocks away. I suppose that must be Hyoudou and that nun Azazel spoke about with the Twilight Healing. I guess nothing is here after all...'

!

He froze as he felt something he was feeling lately.

...It felt like someone was watching him.

Kaii walked into an empty alley and looked around, but the feeling was gone.

He checked around again and hesitantly shrugged it off.

As he went to leave, he froze in his tracks again, and swung his head around.

There was a noticeable presence in the outskirts of the town.

'It looks like there's a Stray Devil around here. I guess I can have some fun after all!' Kaii thought to himself with a smile.

After making sure no one could see him, multiple black wings sprouted from his back, as he zoomed through the sky to the outskirts.

The wind lashed against his face, as he got a better view of the city.

"It's actually pretty nice looking."

Although it looked peaceful, the town had strong connections.

After gazing at it, he silently landed outside of an old run-down warehouse.

He made a wry smile as he walked inside with his wings out.

"Who's there?!" A loud voice bellowed.

"Hello, hello." Kaii greeted.

This was one ugly Devil. It was a man with bull characteristics and reminded Kaii too much of something he'd seen in a cheap old movie.

His eyes widened at Kaii's multitude of wings.

"A leader class Fallen Angel?! I-I didn't mean any disgrace!" The man started to get a fearful look in his eyes.

Kaii continued his wry smile. "Sorry, I'm no leader."

The Devil snickered, "Good... that means I can kill you without worrying!"

Wow, generic right off the bat, huh?

The man charged at Kaii with higher than normal speed and completely made the floor he was standing on start crumbling.

Of course Kaii dodged by simply floating up into the air.

LEAP!

To Kaii's surprise, the Devil jumped right up to him!

"All you have is raw attack. How in the name of Maou are you supposed to win like that?"

The stray Devil angrily proceeded to up his speed and attack Kaii in a fury of punches and kicks that could barely be seen with the naked eye-

But it was useless as Kaii was too fast to seen with the naked eye.

Kaii dropped down to the broken floor, and danced around it, leading the Devil in a circle.

SMASH!

The stray slammed his left foot into some rubble, causing it to collapse even more.

"Some shitty Fallen Angel playing around with me..." He growled under his breath.

Kaii's eyes noticeably sharpened in response to that.

After completing one more circle, the young man stopped right in his tracks.

"I could have ended this before you even got the idea of attacking me but I wanted to have some fun, but fighting an opponent such as yourself who only uses raw power and has little mental stability is boring beyond belief. Oh well." Kaii said as he pointed below the Stray Devil.

"What the...?! WHEN DID YOU-"

There was a larger than average magic circle below him and he couldn't move all of a sudden!

"How... how are you able to use Devil magic?" The stray asked while being in complete shock.

"It doesn't really matter. If you're wondering when you stepped on one of my Devil traps, it was right from the beginning. As soon as you attacked the floor I set it then and just led you around to it in a 360 degree circle while dodging you. Simple, no?"

BOOM!

He simply flew up and snapped his finger, as the magic circle detonated taking out the Stray Devil and a portion of the warehouse in the process.

He landed a few blocks away and stretched while making a whining sound. "He didn't even wake me up..."

...

Kaii glanced back and processed the fact that he just blew up a fucking building.

'Azazel should cover that. I think. Yeah, definitely.'

After pouting for a minute, Kaii used a magic circle to change into a white dress shirt with the top 2 buttons undone along with black dress pants and shoes.

And off he went to the engagement, however...

After he left, a figure dropped down to where he was standing.

"Fate is finally starting to work I see."

This figure leaned against a rail and watched the town, as the moon rose in the night sky.

Around this time, Issei would be waking up, and start his plan.

Of course, this individual already knew that would happen.

"I've already seen this play out a few times..."


The Underworld. It was about as big as the human world, although it was in a different dimension inside the same world. However it had much more landmass as there were no oceans.

The sky would look turquoise during the day due to a creation by the Four Great Satans, in order to help new Devils that were reincarnated. At night it would return to its normal color of a dark purple, to signify night. In order to further help the new Devils, an artificial moon was created.

It currently was night, and the sky shined.

Kaii was inside the Devils' territory, and was waiting inside a mansion that belonged to the Phenex family.

He was able to enter the Devils' territory due to his cover, but it was for no malicious reason or anything. It was simply the state of affairs between the factions that caused this, and he didn't want to be cooped up by the Grigori all the time.

'Is the whole idea of being fashionably late attached to every damn Devil?!'

Kaii had his arms crossed as barely any others were present, despite it almost being time.

But before he could do something that likely would've been stupid, Riser's family appeared from a magic circle that was orange and had fire surrounding it.

"Well this is going to be awkward." Kaii said under his breath as he smiled at them.

"Eh? Who are you? You seem a bit early." Riser Phenex questioned. He was a tall and handsome man that looked a bit older than him with short blonde hair and dark blue eyes.

"Sorry about that, my name is Kaii and I'm from an Extra Devil family. Nice to meet you Riser Phenex." Kaii said with the biggest fake smile anyone's ever seen.

"I don't remember you being on the list, um let me see... you said your name was Kaii?" Lady Phenex asked as she looked at a list in her hands.

She was a beautiful woman that appeared to be in her twenties with dark blue eyes and blonde hair that was done up very high with ornate decorations.

Before Kaii could start freaking out the door opened behind him and people started to walk in.

Notably, Rias Gremory's peerage and Sona Sitri, the heiress to the Sitri house. She was a bespectacled woman in her late teens with a slim figure, a black bob cut hairstyle and violet eyes.

"Well no matter. Now I have things to attend to, and your father is also busy. So you two enjoy the party." Lady Phenex said to her daughter and son before quickly leaving.

Her daughter was Ravel Phenex, who looked like a teenage version of her, but with her hair in a twin-drills style.

As soon as she left, Ravel began to aim a small killing intent towards Koneko Toujou, the Rook of Rias' peerage.

She was a petite girl around 15 or 16 years of age with white hair and hazel colored eyes. She reminded Kaii of a cat, and he sighed as he figured it out. Typical cat vs bird rivalry.

'Girls are terrifying when they get this way.' Kaii thought to himself while walking away awkwardly.

After escaping the war between those two, he found a large crowd surrounding someone.

It was a tall man with a big body and distinctive violet eyes and black hair. His name was Sairaorg Bael, also known as the strongest young Devil. He was at the party with almost all of his peerage.

Kaii looked at him and noticed something. Sairaorg was actually nice in comparison to other Devils of high status. Of course it's not like he could assume that after seeing him just once, but it was more of a hunch after seeing him communicate with people.

Everyone turned to the center of the large room when a fiery flash sparked, and revealed a familiar person.

Riser appeared in his white dress at the front of the party room and officially welcomed everyone.

As he went on and on about "welcome noble families" and "this is my soon to-be wife Rias", Kaii noticed Ravel looking incredibly happy and/or proud.

Next to him was a young woman who appeared to be in her late teens with long crimson hair, blue-green eyes and a buxom figure. This was Rias, and it was instantly noticeable that she was Sirzechs' sister. Currently, she looked very pissed, and for good reason.

'Nobles...' Kaii thought with a comical sigh.

As soon as it got started everyone turned around to see a boy fighting through some guards and barging in the room.

"Oh? Who is that?" Sairaorg asked with interest.

"Issei Hyoudou, I think. The current Sekiryuutei. He is in Rias Gremory's peerage." Kaii answered.

"So he's here to crash the party huh?" He said with a chuckle.

At that moment Sirzechs Lucifer and his Grayfia Lucifuge, a beautiful woman that looked as if she was in her early twenties with silver hair and matching colored eyes in a maid outfit appeared via magic circle and smiled to everyone.

...But not before Issei claimed Rias' virginity for his own.

Kaii tilted his head and nodded slowly. 'So thaaaat's how it is between them...'

Issei was apparently Kaii's age as well, and had short brown hair and light brown eyes. The two for a quick second glanced at each other, not sure what to think.

"What is that man thinking?!" Ravel asked while looking a little disgusted and a little shocked.

Kaii couldn't help but laughing at Issei's ridiculously perverted nature.

"What's the meaning of this?!" Riser demanded.

"I arranged for this to happen, because I was quite frankly let down by the Rating Game." Sirzechs said before everything got out of control. "I think it's time we see who's really stronger, considering my sister's pawn who has been a pawn for no more than 2 weeks almost defeated the 'Great Phoenix'."

"Fine! After I burn him to a crisp then this all ends!" Riser said with too much confidence.

"If you win, Sekiryuutei, what would you like as a reward?" Sirzechs asked.

"All I want is for the marriage to be over and Rias Gremory to be free!" Issei responded.

"Alright you two, head out back and we'll get this started." Sirzechs ordered.

'Hmm, this would be a good chance to see it after all.' Kaii thought while putting on a pair of fancy glasses that were remotely connected to Azazel, and also allowed communication.

Of course he didn't normally wear glasses, but it was a good opportunity for Azazel to get a peek at a Sacred Gear, which of course was his fanaticism.

Kaii headed out the front and walked around the back without anyone seeing him and sat next to where Ravel, Sirzechs, Grayfia and Sirzechs' parents were. He kept a bit behind them so only Sirzechs, Grayfia and Ravel could know he was there.

"Alright Azazel, can you see what's going on?" Kaii whispered.

"Yeah, for barely any training with his Boosted Gear he seems confident." Azazel's voice quietly answered. "Thanks for remembering this by the way. I forgot to tell you to do it earlier."

"Don't mention it. Anyways, the Boosted Gear huh? Is it similar to Vali's Divine Dividing?"

"No, they actually have almost complete opposite Sacred Gears. You know what the Divine Diving does, but the Boosted Gear instead doubles your power every 10 seconds, and is known for being a good support as it can transfer power once boosted. And as always it has a Balance Breaker, which in this case is Scale Mail, like Vali." Azazel explained.

'Hmm, for just a Mid Tier Longinus to be this useful. I wonder how strong the top ones are...' Kaii thought.

The fight began and Issei activated his Balance Breaker and went into his Scale Mail, but it wasn't complete. Azazel instantly realized what was happening.

Issei's Scale Mail was slightly similar to Vali's in the sense it was Dragon styled armor, but instead his was red and gold with emerald colored jewels on it. Also, Issei's did not have any wings on it.

"It looks like he sacrificed his arm since he hasn't deactivated it since he got here. Before you ask Kaii, since the Dragon inside his Sacred Gear is alive, he was able to sacrifice a portion of his body in order to gain more power for a very short time. I would guess for him he has anywhere between 10 and 20 seconds."

Everyone kept quiet as they saw Issei and Riser go at it, really knocking each other around. Only a few people took notice that his Boosted Gear was counting down, and deduced what it meant.

He had less than 10 seconds to win this.

Issei and Riser exchanged furious blows, and it was clear that Issei had the upper hand, but Riser kept on regenerating.

With 4 to go Issei delivered a blow to Riser's face that caused the latter to look frightened for the first time.

Riser suddenly reacted... strangely.

Everyone including Kaii looked surprised as Riser's body reacted very strongly to it and wailed in pain.

"A holy crucifix?!"

"Azazel, is he immune to it in that arm because it's the Dragon's arm?" Kaii asked.

"Yeah, that was definitely... unexpected. But he better hurry, his time is almost up and he won't be able to boost many more times after."

And just as he predicted, Issei's armor ran out.

But before Riser could finish him, Issei held the cross in his left hand which the red gauntlet of his Boosted Gear was on, and splashed holy water on it!

[BOOST!]

The jewels on his gauntlet began to glow like a rainbow, as Riser begged for mercy.

"Screw you!" Issei shouted as he slammed his fist into the Phenex's stomach.

"GAH!"

Riser violently coughed up blood as he was sent back a few meters.

"Onii-sama!" Ravel shouted as she sprouted wings of fire and flew down to grab him.

It was clear that Issei had won.

Kaii looked down and noticed Rias running to a heavily damaged Issei.

"He's weak but very crafty. I think I'll pay the Gremory group a visit tomorrow night." Kaii whispered.

"Kaii? Hello? ...Eh whatever." Azazel asked before hanging up.

Kaii put the glasses away and disappeared by magic circle before anyone noticed him.

Once again, someone was watching him.

This would be a recurring theme for some time.

But this person-

It was just some game to them.


About a day later, Rias, her peerage and Sona were walking outside of the large Kuoh academy. Sona seemed to be congratulating Rias and the others, as the rest of her peerage was not present.

You see, the town of Kuoh was actually split between the two. So, Rias would take care of things at night, and Sona during the day.

The two also had authority in the school. Rias' family owned the school, but Sona was the Student Council President. Rias was just the club leader of something called the "Occult Research Club". Basically a cover for her peerage.

Kaii was standing on top of the school, watching them. 'How can I go down there and challenge them without it coming off as creepy?'

He got a better look at the other three members of Rias' peerage that he didn't quite see back at the party. Of course everyone present was wearing the school outfit

One was a pretty girl with long blonde hair. This was Asia Argento, the nun who had the Sacred Gear "Twilight Healing".

The next was a handsome young man his age with short blonde hair and gray eyes. His name was Yuuto Kiba.

Kaii crossed his arms at the sight of him, simply because he knew nothing about him or what he could do. Although the same went for all of them aside from Rias, Issei and Asia.

The last one made his eyes widen.

She was beautiful, and looked to be about Rias' age. She had a very voluptuous body. Very long black hair that was tied up with an orange ribbon and violet eyes. Akeno Himejima.

Something was familiar about her and he couldn't shake the feeling.

He forced his wings to spread, and landed in front of them all.

Issei and Akeno glared daggers at him, as Rias and Sona narrowed their eyes.

Issei and Akeno had personal grudges against Fallen Angels, so it made sense for them. However, Rias and Sona narrowed their eyes due to noting the number of wings he had.

"Rias Gremory? Sekiryuutei?" Kaii questioned. "...I'll take that as a yes."

"Who are you?" Issei asked.

It seemed that he had forgotten seeing him back at the party.

Rias and Sona quickly got in front of everyone and motioned for them to step back.

Kaii crossed his arms as a shallow red aura circled around his feet. It was his Devil aura. He was purposely showing it off to let them know what he was.

"So you're a Devil and Fallen Angel hybrid?" Sona asked.

"Yeah, but that shouldn't be any worry to you." Kaii responded and then turned his stare to Akeno.

"Did you come here to threaten us?" Rias calmly questioned.

"Nah, just to fight. It's up to you how you want to do this. But I would recommend you all attacking at once."

Akeno seemed to strongly dislike those wings of his, much to his curiosity.

"Who are you? Who are you allied with? Is this an act of war?" Rias demanded.

Kaii froze for a split second when he realized it.

This was an act of war!

He made a stupid smile aimed at his own stupidity. 'Consequences be damned at this point I guess.'

"No this isn't an act of war. And... if you beat me I will tell you all about me, who I work for and-" Kaii turns to Issei with a smirk. "-everything I know about the current Hakuryuukou."

Issei's gauntlet automatically appeared on his left arm and a voice began to speak from within it.

[The Vanishing Dragon has already awoken?]

"Oh you must be Ddraig, the Welsh Dragon? And yes he has, for quite some time now." Kaii answered.

A really, really long time actually.

"What makes you think we'll accept this?" Sona asked.

Kaii formed a spear of light that was blood red and aimed it at Akeno.

"You don't have a choice."

Before Kaii got an answer Kiba appeared behind him with a sword that seemed to try and suck up his light spear.

Kaii catapulted up into the air to escape from it.

'A holy eraser sword? Coupled with that speed, he's definitely a Knight.'

[Boost!]

As Issei began to charge up, Rias and Sona covered him and began to throw destruction magic and water magic towards Kaii.

To be exact, they weren't just regular types of "magic".

Magic in particular was broken down by the type it was derived from.

In this case, it was demonic magic, used by Devils. It was powered and manifested through creativity, whereas other types of magic were usually through logic and other things such as a scientific formula.

Rias in particular was using the Power of Destruction. It was an ability originally from the House of Bael. As the name suggested, it was a form of demonic energy that granted the user explosive attacks to annihilate things. It was black and red and quite fearsome.

Sona's was just water-based magic that was weaker than Rias', but came in higher speed and more consistency.

Kaii easily zoomed around in the air, dodging them all.

'I see you want Issei Hyoudou to transfer power to you. Well considering he has no weapon besides his fists, he has no chance against me-' Kaii's thought was interrupted as he noticed Akeno launched a lightning bolt towards him from his blind spot.

Kiba smiled as he saw three large masses of energy going towards the boy.

But his smile soon turned to disbelief as Kaii formed a defensive magic circle in each hand.

Kaii started spinning counter clockwise, which in turn formed a perfect 360 degree barrier!

Just as he wanted it to, the magic attacks simply bounced off him and landed nearby taking out a few trees.

Kaii gazed back at Akeno and finally realized it. "That lightning was awfully familiar. Are you related to Baraqiel?"

"DON'T EVEN BRING UP THAT NAME!" Akeno screamed while madly throwing lightning bolts at him.

In the flurry of attacks, he deduced that she was Rias' Queen, seeing as Asia staying so far behind and doing nothing was obviously a Bishop, unless of course she had two.

He just put his hand forward as he nimbly dodged them all.

"Cool off."

He put his hand on her face, and used a magic wave to hit her pressure points, causing her to fall unconscious.

Before she fell to the ground, he grabbed her and laid her on it with a perplexed expression.

Baraqiel did supposedly have a family before, but he never heard the details of it. Judging by her reaction, she definitely knew him. So why the extreme hatred?

Issei gritted his teeth and looked towards Kaii with a very angry expression.

[Boost!]

'I'd like to see what he can do when he's fully powered up, so I'll keep going for now.'

Kaii landed on the ground quickly and allowed his wings to go away finally.

Kiba dashed right at Kaii, who formed a katana made of light.

As their two swords clashed Kiba couldn't understand why his holy eraser wasn't, well... erasing!

As if he read his mind, Kaii smiled. "My weapons are unaffected by holy erasers because this isn't holy at all. This is a demonic light sword."

Demonic light was something exclusive to Kaii. Although it wasn't for no reason...

'-That's troublesome. He's good, but he's not an expert swordsman like me.' Kiba thought to himself as he continued attacking.

"Well this wouldn't be any fun if I didn't do this." Kaii then materializes a second sword of light but this looked more like an eastern sword, and threw it towards Kiba.

[Boost!]

Kiba grinned. Kaii had the advantage in strength and speed but Kiba was the best at handling swords. Kaii didn't have near as much training.

Random clink sounds echoed throughout the school yard as the two continued fighting.

Asia, Koneko, Sona and Rias had a very tiny comical sweatdrop, because he went from threatening to start a war practically to having a blast fighting with Kiba.

Issei on the other hand was concentrating on charging.

[Boost!]

Kaii was more of a "self-proclaimed" cool-headed person, but he did enjoy the heat of the battle at times, such as now. Not to the extent that Vali did though.

"Alright, this has gone on for long enough I'd say." Kaii finally stated.

Kiba looked surprised as Kaii dug his sword right into the ground...?

Kaii used all of his strength to push the sword into the ground, making him jump right above Kiba!

Without wasting any time, he brought one of his legs down as hard as he could, making the Knight drop like a sack of potatoes.

[Boost!]

'Just a bit more...' Rias thought. She and Koneko attempted to keep Kaii busy.

'That short girl could definitely do some damage to me, it looks like she's a Rook. But she has no speed or long range attacks. And Rias is no threat if you dodge her attacks.' He deduced quickly.

[Boost!]

Kaii pulled his wings out again and with breakneck speed appeared behind Koneko, going to attack her, but she quickly turned around... almost as if she knew he would be there, prompting him to widen his eyes.

'That was...?'

Kaii ducked while gritting his teeth as she almost kicked him.

'There's no way a normal Devil can react that fast... no way.' He thought.

Koneko's usually emotionless eyes widened when Kaii faked her out in the middle of her combo.

!

Before she knew it, he hit the back of her neck, with as little force as needed to put her out for a while.

'Koneko-chan...' Issei thought to himself with anger.

Rias began using more destruction magic, but it didn't help one bit. Kaii could just dodge or use a defense circle.

"So I guess it is true. you're the weakest in the Gremory family, AND you were spoiled as a kid. So you just automatically thought you'd never have to train. Wow, what a waste of good magic."

"You act all high and mighty as if you know everything. It seems we need to knock you down a few-"

[Boost!]

"It's almost time. My quarrel is over with you."

Kaii did the same thing he did to Akeno, and forced her to lose consciousness.

"BUCHOU!" Issei roared.

"What the?"

[BOOST! BOOST! BOOST! BOOST! BOOST! BOOST! BOOST!]

'He broke the 10 second count!?'

[TRANSFER!]

Issei then tapped Sona's shoulder and her power began to multiply tenfold! So much so, a cool blue aura began to surround her and violently lash around!

Kaii smiled widely and put his hands out sideways.

"Feel free to attack me in any way you wi-"

DOOON!

Sona wasted no time and sent a large blast of enhanced water towards Kaii who didn't have time to dodge.

He was sent flying a few meters into the main school building like a rag doll.

'...That was a hell of a blast...' Kaii complained as he slowly got up.

However, Kaii was by no means defeated.

"Sitri... this was fun but do you really think you can beat me with that power?"

"Of course. My power is greater than yours and you have no statistical advantage over me here."

Issei by now was on the ground panting, due to reaching his limit.

'Wait where is that girl with the twilight healing?' Kaii asked.

After looking around, he noticed she was healing everyone. Most of them didn't need much healing in the first place though, rather they just needed to regain consciousness.

"Hmph."

Kaii just landed back on the ground and offered his hand to Issei.

"Well I'd say that's enough. Wouldn't you?" Kaii slightly joked.

"You did all this just to fight?" Issei asked with a hint of anger, hesitantly accepting his hand.

"Sorry I went overboard. I can't control myself once I'm the heat of a battle sometimes. Yet I try to avoid them when possible. I'm really a hypocritical guy." Kaii said with a chuckle.

Hypocritical. Yeah, that was a good way to explain Kaii.

Asia by now had returned everyone to their normal shape.

The other's faces had slightly softened, but not completely. Of course, this was because he was a Fallen Angel. However, Akeno refused to even look at him.

"...You're strong. Too strong for someone our age." Koneko said in monotone.

Kiba and Issei nodded.

"There's a lot of people stronger than me who are around our age. Well, no matter. Hate to leave you guys like this." Kaii pointed to how a small portion of the school was wrecked. "But I'd better leave before someone important realizes we were fighting. I'll definitely be seeing you guys around. Oh, I'm not sure if I told you yet, but my name is Kaii."

No one bothered to say goodbye, so he simply disappeared into a magic circle.

"So who's gonna fix the school by the morning?" Issei asked, while everyone relaxed.

Sona ignored him and narrowed her eyes. 'If someone that strong exists at our age, we should know about him. Which means he's being kept a secret by someone. On top of that... the name Kaii sounds oddly familiar. I should ask Onee-sama later.'

"That guy, something seemed weird about him, you know?" Issei wondered.

[Yes, something was definitely strange about him. But I'm not sure if that's good or bad.]

"You think so Ddraig? Eh it doesn't matter. I'm going home to sleep!"

Rias grabbed Issei by the collar and shook her head while pointing to the rubble of the school.

"Wait you mean..."

Rias nodded.

"Me?"

"Yup."

Issei slammed his fist into some rubble, as a fire burned in his eyes. "That fucker is gonna pay for this!"


"Do you think they'll report that to their older siblings?" Azazel asked in his office that Kaii was also in.

"Maybe. Being a hybrid could be a big deal, but I doubt they will still."

"Where were you?" A voice interrupted.

"Nowhere, Shinji." Kaii said.

"Oh come on, you know it sucks when you're not here. I gotta listen to Vali go on and on about his fighting. Don't even get me started with Alice." The person jokingly said.

"If I may, Shemhazai is gonna be back soon. You two might wanna go." Azazel said.

"Alright."

"Good idea."

The other person left the room in front of Kaii.

"Kaii, before you go." Azazel said seriously. "I'm intrigued by the Sekiryuutei now. I'm moving into his city and I'll act as one of his clients. So you won't be able to see me for a while. But I want you to prepare to move there as well."

"I see. Well tell me when. By the way do you know where Vali has been going lately?"

"I've got no clue, knowing that boy he's up to something crazy."

"Yeah, I'm sure it's nothing"

It was never "nothing".


Attention: If you are reading this, please note that the story is currently undergoing editing on some of these earlier chapters. I managed to screw up some stuff including grammar and plot points so just be wary of this. This editing process will take a little bit of time.


Overly exaggerated and contrived story synopsis... check. Sorry, but I'm absolutely terrible at making those things.

First off, no OC in this has their design particularly based off any character so please may no mind to the cover image.

Issei will have his own harem in this, but what goes on in his harem will be mostly off-screen, seeing as I can assume most readers of this already know the original story, so yeah his development will primarily be the same as canon.

Only a few canon characters will be in Kaii's harem. Akeno, Serafall, Rossweisse and Xenovia are those ones. There's two other characters that I'm likely going to add, but they're not in Issei's either. Those two will not be revealed until later on into the story. All other "haremettes" will be OC's.

Ah yes, if you're looking for a self insert MC, or wish fulfillment story, you may wish to stop reading this. Nothing against those because obviously there are stories designed for that, but that's definitely not what it is. To elaborate further without spoiling, Kaii will by far get the most development as a character in this story. He looks almost perfect on the outside. But he's fucked up on the inside. Not in a bad way, but in the way of him being a big hypocrite, having questionable morality etc. I don't want to write him as your average MC with sad backstory or something like that, or rather that is slightly accurate but he's also to blame for what's wrong with him. A flawed character.

Although I wouldn't call Kaii or any other character incredibly "deep". This is just a fanfiction after all.

This story will get dark. No grimdark edgy shit, but dark. Especially later on. But I don't want it to become overwhelmingly full of despair. That's why comedy exists. And romance. But yes, it will get more serious than the canon at times. Although I do want to keep a consistent "fun" factor, which is what makes DxD such a pleasure to read/watch, so that will be my biggest challenge.

The harem won't be happening overnight either. It's a slow and steady process that really takes off at a certain point. Kaii won't be a dense idiot. He'll be equally interested in the girls that are interested in him, making a bit more of a natural relationship, but certain flaws with his character will sabotage this for a while.

Yes there will be lemons. Yes Kaii will actually be active instead of just waiting for some random girl to fall on his lap. No the lemons aren't just gonna be thrown in there for the hell of it. For most of them I really want to have a sense of romance behind them. Plus, I really do have a story to tell so I'm not just gonna make them the focus of the story.

I could go on explaining this but just continue reading if you wish.