So…

This is an idea that I had in my mind for quite some time now and yes, this is a Kamen Rider crossover with Highschool DXD.

So why am I making this fic? Like I said just now I had this idea for quite some time now, but it is also the fact that I am honestly surprised that no one made a Kamen Rider crossover where Issei is HIS own Kamen Rider without using other existing Kamen Rider's power.

This is also a slight AU, with just minor changes and minor lore changes, not too much to deviate from the cannon.

I know this kinda defeats the purpose of crossover by doing that, but hey, as far as I know, I don't think there is a definite way as to how you should make a crossover. I mean, we literally have KR crossover fics where the only retained elements of the original source material are the characters from one source material and the power of the other.

Oh, and OC protagonist…

Lots of them have that huh, now that I think about it…

Whatever! Enough chit chat and let the show begin!

I do not own the franchise/ series. Highschool DXD and Kamen Rider belongs to Ichiei Ishibumi, Miyama- Zero, Fujimi Shobo, Funimation Channel, AT-X, TNK, TOEI, and Shotaro Ishinomori. Please support the official release.

When I was a kid, I want to be a hero.

Every kid wants to at one point of course. But for me and my childhood friend, well, we made a kid promise after he… I mean she (it was last minute that I knew her true gender), say something I still remember today.

"Ise, promise me when I come back, you will be a hero!"

"Then promise me the same thing too!"

Like any kid promise, it should have ended with us forgetting it. It was a childish promise after all.

But for me…

A strong wind blows the crimson muffler…

A green-colored helmet with red glowing eyes, eyes that can strike fear to the evil and calm those who are in their protection…

I want to be like that person.

I really want to be a hero.

"So, is it going to be the same reason, Hyoudou-san?"

Currently, a young bespectacled girl with a slim figure and black hair styled in a short bob cut and violet eyes is sitting behind a large desk with a deadpan look. She wears the Kuoh Academy uniform, which consists of a black blazer with white accents over a white, long-sleeved dress shirt with black highlights with a black ribbon on the collar and a matching black dress. The girl stares at a boy in front of her, who is scratching the back of his hair while actively trying to not look at the girl.

The boy has brown short spiky hair and light brown eyes. Like the girl, he also wears the Kuoh Academy Uniform, but with matching black pants, and brown dress shoes.

The girl and the boy are Souna Shitori and Issei Hyoudou respectively. They are now in the Student Council Room along with the disciplinary teacher, who is sitting beside Souna.

"I'm sorry, sensei. I'm sorry, Kaichou, but the delinquents were harassing my friend again." Issei looked at them and replied to both the teacher and the student council president. Honestly, how are they not expelled last year? This is their third time doing it since last year.

"Hyoudou-san, I understand that you are defending a girl from a group of men," The disciplinary teacher said in a strict voice, then he signed. "But to beat up a group of delinquents to the point that they have to go to the hospital this time… is that necessary?"

The boy looks at the teacher for two seconds before he hung his head low. He knows he had gone a little too far with the fight, but when he saw the boys kept on hitting on his friends and was even more aggressive trying to get touchy with the girls, he just acted on instinct and stop them from harassing them.

"Yeah… I got out of line just now. Sorry for the trouble."

Seeing that the boy apologized, Souna nodded. "Well, there is no need for that. Considering the situation, I think you made the right decision. I am sure that the teachers will make the decision to expel those students." She reassured him while stated those words like it is a matter of fact. Sometimes Issei found himself getting chilled down his spine when she said something in that tone.

Souna's eyes meet Issei's and soften. "Just, please, don't go too far next time. I'm okay with meeting you, just not like this."

Issei nodded and gave her a small smile. "I will try, Kaichou." Really, he is very lucky that the teacher decides to let him off the hook this time instead of getting detention. He really needs to stop causing so much trouble to both of them.

With nothing left to say to Issei, the teacher let Issei exit the room. The boy bowed and thank both of them again and walked out of the Student Council Room.

Once he closed the door, he sighs in relief. "Phew, I can't get used to being inside there."

"Ise-kun."

The young man perked up when he heard his name and turn toward the person.

The person is a very beautiful girl with a voluptuous figure, with the uniform emphasizes her figure. She has soft violet eyes and a long black hair that is tied a long ponytail, reaching down to her legs. She looks at Issei with a worried face and walked towards him.

"Ise-kun, is everything alright?"

Issei was astonished by the presence of the girl, prompting him to ask her a question. "A-Akeno-san?! Uh, yeah, I'm alright but- why didn't you go back home? Actually, don't you have club activity to do?"

The girl, Akeno Himejima, blinked once before she giggled when Issei asked her. "Ara ara, Ise-kun. Are you perhaps saying that the princess cannot wait for her hero?"

Issei flustered, his face turn redder than a tomato. "W-what? I am just doing any friend would do in that situation, that's all!" Issei exclaimed. "Although, I did kinda go too far." He muttered the last part.

Akeno giggled again and then smiled softly at her, "Seriously though, thank you for protecting me, Ise-kun. I appreciate it. And, well, Buchou said that we don't have much to do currently, so she let us off early today. "

The two friends stand at the door awkwardly for a few seconds before Issei break the silence. "Well, let's go back home, shall we?" After saying his piece, Issei starts to walk slowly in front of Akeno.

Akeno nodded and followed the boy from behind. The pair were silent for the most part, enjoying each other's presence while basking on the evening sun.

This continues until they arrived at the Hyoudou residence, which Issei unlocks the front door and let Akeno enter the house first.

"We're back, mom!"

Hearing her son's voice, Issei's mother, came out from the kitchen to greet both teenagers.

Issei's mother, Hitomi Hyoudou, is a woman both in her 30s and has the looks. Despite this, she is considered a beautiful woman of her age. Like her son, she has a pair of light brown eyes. She also has a fringe hair cut. She is currently wearing a blue apron over a marron long dress.

"Welcome back, children. I'm sure that you both are famished. I just finished dinner, so let's eat alright?"

If there is and always is one thing that Issei will take it as a fact in his life is that his mother is the best chef in the world. All the food she cooked were heavenly, and no one can beat that fact no matter what.

Is it a wonder why Akeno was so adamant about being his mother's cooking disciple?

Seriously, they were not even near the dining table and yet the mouth-watering aroma had already entered their noses.

The dinner had been a peaceful quite event, except that the mother telling her son that his father will be late from work once again.

"Let me help you with the dishes, Ms. Hyoudou."

"I don't think it is necessary, dear Akeno. This is something I can do by myself and it is pretty late now."

Akeno checked the time on the clock that hung on the wall and found that it was already 7: 50 pm. She looked back to Hitomi, who for some reason had a sly smile before she winked at her.

"Ise," Hitomi called her son, which caused Akeno to stand rigid. "Be a gentleman and bring Akeno-chan back home, please?"

Issei looks at his mother and just gave her a small smile. "You really don't need to tell me, mom, I will still do it. Gonna need to protect the ladies after all- wait that came out wrong…"

"A- Ara ara, Ise-kun, am I "the lady" that you are trying to refer?" Akeno tried to tease Issei, but the deep red blush she has on her face makes the teasing less effective.

"Cute." Issei suddenly thought.

Luckily for Issei, he was able to dodge the question as his mother decides to intervene. "Alright both of you, I think you both can flirt each other on the way later during the walk."

Issei decides to ignore the comment and went ahead and open the front door for Akeno. Dealing with his mother's weird teasing will just end with his face beating red from embarrassment. Like the last few times, he tried.

You do not engage a verbal battle (not argument) with Hitomi Hyoudou and expect to come out winning.

"Thank you for the dinner, Ms. Hyoudou."

"Oh, there is no need for that, Akeno-chan. We will always welcome you with open arms, dear."

With those words said, both teenagers slowly walked back to the dormitory where Akeno lives.

Akeno was lost in thought during the walk. After hearing the reply, Akeno unconsciously gripped her shirt with her left hand. Those words struck a chord to her. It had been so long since she felt such a familiar warmth in her heart… the warmth of familial love.

Of a mother's love…

"Are you alright, Akeno-san? You look downcast all the sudden." Issei frowned when he saw her face. He was not sure why she had that face. Maybe it had to do with what his mother said? Then again, they only knew each other for a year only, so he couldn't judge her, nor he can't make any assumption as to why this was the case.

Akeno blinked and broke out of her state of mind when she heard Issei's voice. She turns to him and saw his worried face. Her eyes widened when she saw that and squicked a little when she saw how close was her face when she turned to Issei.

"I'm alright!" She almost shouted those words. Issei was taken aback by the sudden outburst before Akeno recomposed herself and apologized to him. "I'm sorry. It's just that I suddenly remember something from the past when I hear what your mother said just now. I really don't know what I suddenly thought just now."

"O-oh, I see…" the boy simply replied to her after she apologized.

Once again like the evening, the pair of teenagers walked in silence slowly; but the silence was broken when Akeno struck up a conversation. "You know, I just realized it has been a bit over a year since we first met."

Issei looked at her. Thinking back how long ago was it when they first met. He chuckled a little and gave her a small smile.

"Yeah, it HAS been a bit over a year since we first met. Wow, it feels like more than a few years since we first met." Issei said.

"But…" Issei asked and gave her a curious stare. "Why brought this on so sudden, Akeno?"

"Oh nothing," She replied in a chipper tone, but it sounds a little off in Issei's perspective. "Just that I am glad that I befriended 'The Unofficial School Hero' … my hero…" She continued and mumbled the last part.

Issei's cheek burned red a little when she called him 'The Unofficial School Hero'. "Seriously? I thought that weird title is dead?"

"Nooope," Akito said with a smug face; then the smug turned into a sincere smile. "Well, most people do, but I will never."

Issei signed. He can't blame her, there were two -three by now- times he had to stop the same idiot from hitting on Akeno. Still, is it necessary to remember that weird title that he got? He still needs to find who the hell made that name. All he did was save her…

And give helping hands to the student councils…

And stopping the Perverted Duo…

And getting cats out of trees (he seriously have no idea why there are so many of them)…

Okay, basically, he did many things that earned the favor of the students.

Issei signed again and decided to end the conversation. He had tried to make her forget about the weird title. It ends as well as it can get.

Whoever started that title and spread it, he needs to find and ask how in the world did they spread it and still be under the radar.

They walked for a few more minutes before the tall dormitory building was on sight.

"Well, we're here." Issei stopped at the front gate of the dorm. "See you tomorrow then?"

Akeno nodded before flashing a very dangerous sly smile. Issei was confused and felt a chill down his spine, his instinct telling him he needs to run away now. Unfortunately, his body was not listening to all and Issei just stands there.

"Ara, I thought that you will stay with me in the same bed tonight, Ise-kun?"

"W-wait Wha…?"

"Ehehe, kidding. See you tomorrow!"

All that Issei can do is stand on the spot and stare at her said her goodbye in a sing-song tone before she entered the building.

He scratched the back of his head and sigh. Women, Issei thought. Then he turned around and walked the dimly litted street, going back to his home. That is before he saw a strange paper on the floor.

"What's this?" Issei picked it up and observe the paper closely. From what he can tell, it looked more like a blank paper with a strange symbol, almost like something from a cult.

"Akeno must have dropped this when she was running back to the dorm. Well, I'll just give her back myself tomorrow." Issei said that to himself while putting the paper to his pocket and then started to walk.

After walking for a few minutes, Issei felt uneasy.

"Too quiet… the street is too quiet." Issei was pretty sure that this kind of thing is rather cliches. Dimly littered with absolutely no sound and a person all alone on the street. What's next? A psychopath walking out of the dark trying to kill him for the heck of it?

"Please don't tell me I jinxed it."

Trusting his instinct, Issei moves one step back quickly, with a bullet pass right in front of his eyes.

"What the fuck, man?! You should have let that fucking bullet go through your stupid face!" He heard a really loud and annoying sound from the dark alley and then looked towards that place.

The person with the annoying voice is a crazy looking young man with a pair of red eyes and hair that might as well come straight from anime and manga, as he has a short, neck length white hair. The man wore a black long elaborate coat with a white collar shirt and black pants.

"Yeah, no thanks. Why not do that to moving target practice." Issei retorted and glare at the man before he stands up.

"Shut the fuck up! I just want to hear you screaming like a fucking pig. So why don't you STAY STILL! HEY! DON'T RUN AWAY ASSHOLE!"

While the man was shouting and cursing in pure madness, Issei had taken the opportunity to jog away from the madman before he makes a full sprint when the madman notices Issei was not on his previous spot.

Issei completely ignores the madman's demand and continues his sprint, hopefully, outrun the madman.

Unfortunately for Issei, when he turns his head back, his eyes widen when he saw the man was close behind him despite the fact that Issei had a very long head start. He was at least 50 meters away from him just now and now he is hot on his tail?!

Even worse, now the man shot Issei's left leg, causing him to fall and tumbled on the road. Issei immediately grabbed the wound and hissed in pain.

"What?! You thought that you little shitheads can run away me, the super fucking awesome Freed Sellzen?! Well fuck you, you shitty idiot, NOW START FUCKING SCREAM LIKE A PIG, YOU FUCKING CUNT!"

The man, who called himself Freed, continues to scream loudly and maniacally. Issei doesn't care, he needs to get out of there and get help. Plus, talking to a person, especially a madman, while in a dangerous situation is a waste of breath.

Seeing that Freed continues to yap while twirling his gun and does not care about his surrounding for the second time, Issei took advantage and use his uninjured leg and made a low sweep on the madman's leg, causing him to trip and fall on the road. When the man fell, the brown-haired boy saw the gun fell out of his hand; this made Issei to quickly took the gun away from Freed while he picked himself up, ignoring the pain and the blood that was flowing out of his leg.

Freed immediately got up and growled at the boy, prompting him to rush at Issei and grabbed his neck and slammed him on the wall.

"That's it asshole! You're fucking dead now! You are supposed to just be my playtoy, but nooooo, you just have to make this more bloody fucking annoying to me and make me look like a shitty idiot." Freed sneered and as more words coming out of his mouth, saliva started to spit out of his mouth.

Out of desperation, Issei points the gun that he picked up and shot the madman's stomach, causing him to stagger and released Issei. Issei stepped back a few times before he brought up the gun and aimed at the madman.

"You… are… really, really annoying." The brown haired boy spoke softly and inhaled air after the choke, but loud enough for Freed to heard it. The boy continues to slowly walk back, while Freed was busying himself holding his wound.

Freed had enough of the boy and brought out a strange handle-like object. Suddenly, a small flash of light was created and it turned into the shape of a sword. "Fine, fuck it! If this shithead wants to fucking die so bad, then have at it!"

When Issei saw the sword, he immediately aimed at the man; but the attempt was for naught because the next thing he knew was that Freed stabbed him on the chest and Issei ended up vomited blood from his mouth.

"Argh!"

"You're the annoying one, asshole." Freed sneered and stabbed his sword deeper into the wound, causing Issei to dropped the gun and spit more blood. "I give you chances to grovel and scream to make me feel excited, and now you throw it away just for you to struggle like a fucking roach."

"Now die, motherfucker!" With that shout, Freed plunged the sword one last time to make the kill.

At least it supposed to.

"What the hell?! Why won't the sword move." Freed shouted again and tried to move the sword, but ultimately the attempts were in vain. He looked at the handle again and saw that the boy is holding the sword tightly.

Issei growled and used his strength to try and push out the sword. Bit by bit, Freed's strength failed him as Issei continued to pulled the sword and began to overpowered Freed.

"What the fuck! What the fuck! Where the hell did you get that hax!" He can't accept it. Freed could accept that some nobody began to overpower the super awesome him! This can't be happening!

"I can't die…" Issei continued to push the sword away when a green light slowly shines from Issei's left hand. He kept pushing it away from him until he shouted and the green light shined even brighter.

"I WON'T DIE!"

[BOOST!]

Right after the shout, Issei used his left hand and punched Freed on the stomach, causing both him and the sword flying away from Issei. This caused Freed to hit his head on to the wall, leading him to clutch his head from ringing.

When the green light finally dimmed, a red clawed- gauntlet with a large green jewel embedded on top of it and two golden spikes on each side on the gauntlet.

Issei breathed heavily after he finally removed the sword, using his right arm to hold the wound. He glared at the fallen man who is a few feet away from him, waiting for him to get up before Issei collapsed on the floor -with the gauntlet vanishing on sight- from too much blood loss, and now is in a near death state.

Freed got up from his brief headache and look at a near dead Issei. Freed stared at him for a bit before he made a maniacal smile and picked up the sword that was knocked away from him.

"Finally… fucker is finally dead, and he has a Sacred Gear to boot too." Freed said while he weakly got up and limped away from Issei. "Fuck… this kid really did a number on my stomach… whatever, I'll make those brainless idiots back at the base to get me healed."

Issei stared blankly at the limping madman, too weak to even make any noise.

"That's it?" Issei thought. "I am seriously dying here… out in the street, dead of night?"

He still hasn't fulfilled his promise yet. It sounds cliches, but he still has so many things to do. He can't die here. He doesn't want to let those who are close to him cry like his parents and Akeno.

Oh gosh, Akeno. He can't bear to see her cry again after what one of the cronies that follow the delinquent who hit on her did to steal and almost destroyed the one ribbon that was close to her heart. He saw it, and he doesn't want it to happen again.

"I still have that promise I made… that dream…"

A green-colored helmet with red glowing eyes, eyes that can strike fear to the evil and calm those who are in their protection…

"Not yet… I can't die now…" Issei muttered weakly, not noticing that a soft red glow coming from his pocket as his consciousness slowly fades.

Perhaps it was a hallucination from blood loss or something else, Issei can vaguely see a bright red light suddenly shined and a figure came out. From what his remaining consciousness can tell, the figure -which he assumes is a woman- looked around before they saw him and cover their mouth before and rush to his side, ignoring the pouring blood.

In the last of his consciousness, before he faints, he heard a feminine panic shout from the person. Maybe his mind is, again, playing tricks on him again, but he could swear he hear his name.

"…. Don't…. on me, Ise-kun… Please, stay with me Issei!"

The last thing he saw was a raven hair flowing with the wind.

This person who inspired me to hold that dream…

"Wait, I want to ask you something!"

I recalled calling him to stop after he beat the bad guys…

He had no reason to listen to me, I just got saved and I should be running away back to my parents. Nonetheless, he complied and turned around to see me.

"What is that you want to ask, little boy?" His calm voice immediately made me felt like I am protected.

Instead of asking who is he, where did he come from or any question that anyone would have asked in this situation, somehow the only words that came out of my mouth is…

"Why did you save people, Hero-san?"

I'm not sure this question had suddenly made him shocked, but he was silent for a few seconds before he walked to me.

Do you know what he answered me?

He said…

"Because I lost someone before, and I do not wish this bad thing to happen to you."

Issei muttered those words before he frowned and slowly opened his eyes. He blinked a few times and slowly registered his surroundings.

The room is rather normal, with just a wooden study table, a nightstand beside him, a white wardrobe and a white bookshelf that is filled with books. If it is not for the makeup accessory on the study table and the small Patamon plushie, he would have not able to guess this is a girl's room.

Wait, a girl's room.

"Hold up… how did I get here?" Issei asked himself and slowly sits up. He jogged back to his last memories. Thinking back to what happened after he brought back Akeno to the dorm, from when the madman who called himself Freed Sellzen and…

"Wait a minute," Issei eyes suddenly became very wide and he immediately touched his own body, especially the wound he received. "Where are the wounds, those things should keep me in the hospital for at least a month. In fact, how long had I slept?"

Also, why is he in a girl's room? Shouldn't he be in the hospital? He knows he should, after all, people die when they die if they received the wound he had.

His train of thought was broken when the door opened and someone came in. Issei turned his head and saw-

"Akeno-san?"

What he saw is Akeno holding a tray consist of a bowl and a glass of water, wearing the Kuoh School uniform with a rather cute panda patterned apron that hugs her figure perfectly. If not for his current confused thought, Issei would have devoured and burned that image into his mind.

Akeno quickly rushed towards him and placed the tray on the nightstand before giving him a sudden hug.

"Oh, thank goodness you're awake! I was so worried that you are going to stay asleep for one more day." Akeno quickly said those words and hug him tighter while shutting her eyes.

Issei could not speak any words to comfort her, so he opted to awkwardly give her a hug.

After a few more seconds, Akeno finally breaks off her hug, but her worries still filled in her eyes.

"How are you feeling, Ise-kun?" Akeno asked.

"Well… for the most part I am fine, but… I'm really confused right now." Issei replied in a confused tone.

They stayed silent, not able to see each other in the eyes before a growl came out from Issei's stomach, making Issei to flustered.

"W-well, you must be very hungry now, it is afternoon now after all. C'mon, take the bowl and eat." Akeno said it before she stood up and walk towards the door.

Suddenly she turned around and looked at Issei before she opened her mouth. "Don't worry Issei, whatever question you have, I'll answer it the best I can. Oh, and your clothes are at the chair over at the study table."

Once she said what she had to say, Akeno got out of the room and closed the door behind her. The raven-haired girl sighed, this is not going to be easy, is it?

Meanwhile, in the room, Issei stared at the door for a few more seconds before he decided to eat the meal that was given to him.

He might as well enjoy his food for now and ask question later.