(Thousands of years ago. Underworld)
"This is the end for you." An elderly man said to a bloodied figure across from him.
The figure looked up at the elderly man. The man was muscular, but not too muscular. His long white hair trailed down to the upper part of his back. He wore a pure white cloak, now bloodied and torn from the fight not moments ago. Atop his head, was a halo. Not any regular white halo that an angel has, but a golden halo. Along with his golden halo was his 16 golden wings that protruded from his back.
"It appears it is the end... God." The figure said to the now named God.
"Then begone from this world, Satan." God said as he brought his hand up and unleashed a massive amount of holy energy at his target.
Using the last of his strength he prepared himself for the incoming attack. Satan took the massive blow head-on. He had no plans to avoid it, he had no plans to redirect it, he took it all.
DOOOONNNNN!
The explosion was grand, so say the least. It shined so bright that the usually dark underworld was now bathed in holy light.
Finally, the dust died down. God looked at his target and his eyes widened. Standing there, in front of Satan, was a new figure. His hair, as black as the walls of night, shadowing his blood-red eyes.
"You fool..." The figure spoke to the man behind him. "Trying to take on God by yourself... even though you knew you'd lose." He spoke softly.
"Even if I knew I'd lose, I still had to go. He killed the other Maou and our people... I couldn't let that slide. You would have done the same, wouldn't you, brother?" Satan spoke to his brother, barely clinging to life.
The figure didn't speak, he just nodded slightly.
"This is the end for me. Live on, and guide our remaining people to a new, better future, Tansa. Good... bye..." The demon king made his last wishes known to his brother, Tansa, as all light in his eyes faded.
Biting his lip, Tansa tried not to cry. Tears pooled in his eyes.
God stood there, watching. Finally he spoke.
"Good riddance." God spoke as he turned to walk away.
Still with tears in trailing down his face, Tansa turned and faced the now retreating God. Despite his tears, he was no longer sad. All sadness was now replaced. Replaced with anger, rage, and hate.
A black aura exploded from Tansa's body, an aura far more powerful than even Satan's.
God stopped and turned around, eyes wide.
'This aura! It's more powerful than even my own!' God shouted inwardly as he stood there, fearful. The aura was so thick and powerful it made the entire underworld shake.
Trembling, God readied his blade once more.
18 wings, blacker than the deepest reaches of space appeared on Tansa's back. With a burst of speed that not even God himself could see, he closed the distance between them instantaneously.
Grabbing God's head so he wouldn't rocket away, Tansa slammed his knee into God's face repeatedly. Blood spewed from God's nose with every kick. Releasing his hold on his head, and using all of his strength, Tansa slammed into God's stomach with his fist, sending him flying.
Staggering, God got up and looked at Tansa, fearful. 'When did he get this powerful?!' He screamed inwardly.
Tansa's black aura then started to swirl around him. Tansa swiped both of his arms in a circular motion, until the bottom of his hands reached each other. With his right hand's index and middle finger's pointing up, and his left hand's index and pinky fingers pointing down, he spoke his last words to god.
"You, who have needlessly killed my brother and our people, only because my brother abandoned you in favor of creating his own people, do not deserve to call yourself God. Now, I will bestow judgement upon you! Repent! You have five seconds before you receive MY judgement!" Tansa yelled as the black aura around him grew larger.
"5!" God was unable to move, he could only stand there. "4!" Trembling, God attempted to raise his blade. "3!" Despite his attempts, his arms would not respond to his wishes. "2!" Using all his strength, God attempted to teleport himself away, but just like his other attempts, it failed.
"1!"
"Shin Kuro Mahō! (True Black Magic): Black Pillar!"
The black energy exploded upwards creating a pillar of darkness. The pillar was so large all the devils in the underworld could see the monument.
Slowly, the energy dissipated. Laying there, was God. Dead.
God, the leader of the angels, and Satan, the leader of the devils, were defeated.
After the war, both sides agreed to end their conflict. However, with Satan dead they need for a new leader arose.
Tansa, the blood brother of Satan, was nominated to take charge and lead the Underworld. However, he declined, stating that his and Satan's era was over. And he vanished, seemingly out of thin air.
Thus, two factions within the devils were formed. The Old-Maō faction, saddened that the last of Satan's kin was gone, decided that the descendants of the Maō Beelzebub, Asmodeus, Lucifer, and Leviathan would take over as leaders. The New-Maou faction, however, believed that new leader's should be appointed, and a civil war ensued.
The war between both factions was bloody, and left the Underworld itself scarred. Amidst the chaos, the 3 most powerful devils faced off.
The 3 of them were all dressed in their respective Maō uniforms, be it all 3 were different colors. The first was Sirzechs Gremory. The first son of the Gremory clan and the most likely candidate for Lucifer. The second was Ajuka Astaroth. First son of the Astaroth clan, and Sirzechs' lifelong rival, the most likely candidate for Beelzebub.
The third, unlike the other two devils, was a blood relative of the original Maou. Rizevim Livan Lucifer, son of Lucifer and the strongest among the devils, after Tansa's disappearance.
With Rizevim on the Old-Maou side, and Sirzechs along with Ajuka on the New-Maou side, they fought. All other battles on the sidelines were halted, as both sides watched the colossal battle between the 3 leaders.
Despite being outnumbered two-to-one, Rizevim held his ground against the two other Super devils. A testament to the true power of the Son of Lucifer. But despite all his strength, and all his might, Rizevim lost, marking the end of the civil war.
With their true leader, and the strongest among them defeated, the Old-Maou faction surrendered. Unlike the other descendants of the Maou who chose to remain in the Underworld, Rizevim, just like Tansa, disappeared.
Finally, the Great War and the Devil Civil War, were both ended. And the new leader's of the Underworld reigned over their people not Tyrannically, but in favor of peace with the other factions. Their leader, and the strongest among them, was Sirzechs Lucifer. Followed by his arch-rival Ajuka Beelzebub, Falbium Asmodeus, first son of the Glasya-Labolas clan, and Serafall Leviathan, daughter of the Sitri clan.
The Underworld thrived under these four new leaders. While many still mourned the loss of the 38 destroyed pillars, and the loss of not only Rizevim but also Tansa, the only blood relative of Satan, the Underworld continued to thrive.
No one knows where Tansa disappeared to. Well, all but two.
(Many years later. Unknown Location)
"You want me to what?!" Shouted a young man.
The young man had pitch-black hair, and blood-red eyes with slits down the middle. Standing at 2 meters (6'5) and very well-built, his mere presence demands respect, despite only wearing a red t-shirt with black pants and black shoes.
"Calm down, Tansa-sensei. Jeez..." The man standing across from him said, trying to calm down Tansa. The man appears handsome, and young. Though not as good-looking as Tansa, he is still very good-looking. He has shoulder-length crimson hair, and blue-green eyes. Along with his crimson hair is his crimson colored Maou uniform, that matches perfectly with his hair and eyes.
"Calm down?! You are asking me to do something completely ridiculous, Sirzechs!" Tansa shouted to the now named Sirzechs.
"Ridiculous?! But sensei, all I asked was for you to watch over my sister!"
"Exactly! That's exactly why it's ridiculous! Why should I watch over your sister?! Besides, I have more important things to do!"
"Like what?" Sirzechs asked, smirking a bit.
"Like... um... fuck you!" Tansa shouted, now very annoyed.
Sirzechs then burst out laughing at his former teacher.
"Haha! So you don't have anything to do! So, how about it? Will you watch over my sister?"
"Give me a good reason as to why I, Tansa Satan, should go out of my way to help YOUR sister?"
Sirzechs then paused and thought for a moment. And he gained a devilish grin, fitting for the Devil King.
"Well, how about this. If you help watch over my sister and her servants for me, I won't expose your existence to the whole world. You certainly wouldn't want her to find out you're still alive... would you?"
Tansa visibly paled at the thought of her. But quickly regained his senses.
"So you're blackmailing me? Since when do you have the right to blackmail me?! Your teacher?!"
"Since always~~!" Sirzechs sang as he gave an innocent smile.
"Fine, I'll help watch over your sister. Just don't let her find me..." Tansa said, shaking.
"See sensei~! I knew you'd come around. Now, all you have to do is join her club and watch over her to make sure she doesn't get into any trouble."
"That seems easy enough... So where is she?"
"She goes to a school in Japan. It used to be a girls only school, but it recently turned co-ed. I'll have you enrolled as a 3rd year and put in her class."
"School... you're putting me in school..."
"Yep!" He said cheerfully.
"Very well. Now since she's your sister I'm sure she's decently strong, what should I do if she senses me and confronts me about my identity?"
"I'm sure you'll think of something! Now, I must go before Grayfia rips my ears off! Ta-ta Tansa-sensei!" Sirzechs squealed as he teleported away.
Tansa then let out a long sigh. 'My life is going to get a lot more hectic now...' he thought as he went to go lay down.
(Kuou Academy. Rias POV)
It's been a couple days since Issei had us go into that Church and save Asia-chan. Since then I've found that Asia is actually perfect for a bishop! Plus, I'm so proud of my cute kohai for defeating a Fallen while still only being a devil for a little while.
But enough of that, apparently a new transfer student came today. I wonder what he's like?
I then made my way to class and sat down in my seat. All the students entered the class slowly like usual. Finally, sensei walked in and spoke to us.
"Alright class, as many of you have probably heard we have a new transfer student. Would you please come in?" Sensei motioned for the new student to come in.
Slowly the door opened and a boy walked in. He has pitch-black hair, and red eyes with slits down the middle. He's actually very good-looking, and it seems like most of the girls noticed, if the blushes on their faces are any indication.
"Please, introduce yourself." Sensei said
"Very well. My name is Tansa, feel free to call me anything you like. He smiled and made a very elegant bow.
"Wow... he's gorgeous!"
"Tansa-kun, do you have a girlfriend?!"
"Kyaa! Our first male third-year! And he's even more beautiful than Kiba-kun!"
"Please class, save your questions for Tansa-san until after class. Now Tansa-san, please take a seat anywhere you like. Everyone's here so any empty seat is free."
He nodded and looked over at me. He then walked over and took the seat behind me.
"Nice to meet you, Tansa-san. My name is Rias Gremory." I greeted.
"Indeed, a pleasure to meet you as well Rias-san."
I extended my hand for a hand-shake. As soon as I made contact with his hand, I could feel any overwhelming amount of power behind him! Who is this guy?!
"Tansa-san, if you don't mind could you come by my club with me after class? I have a couple questions."
"But of course, anything for a beautiful girl such as yourself." He said smiling.
"Alright class, now lets get started!" Sensei said and class started.
(After Class.)
'Holy shit school is so boring... Come on come on stupid bell! Ring!' Tansa screamed inwardly as he stared at the clock.
Finally the bell rang. Almost instantly, Tansa was surrounded by girls.
"Tansa-kun, do you have a girlfriend?"
"Are you from overseas?"
"How did you get so good-looking?"
The questions poured out. These girls are crazy...
"Please girls, stop. Yes I am from overseas. Yes I do not have a girlfriend, and I don't know?"
A lot of the girls seemed to be crestfallen at his proclamation of having a girlfriend.
"Tansa-kun, would you come us now please?" Rias asked from his side. Standing next to her was a raven-haired girl with purple eyes and a beautiful face. Her figure rivaled Rias' own. Her hair tied in a pony-tail, kept up by an orange ribbon.
"Ah, of course. Lead the way, Rias-san." I said
Many of the girls looked stunned. The two great ladies of Kuou were asking their new king to follow them? Many rumors started that day...
We slowly made our way to an old-looking building on the outskirts of the campus. The place was a Victorian-style building, and gave off a creepy vibe. The inside was no better, it was just as creepy as the outside. Although, it was very clean. At the end of one of the hallways was a door with tape and chains that said 'KEEP OUT'.
'I can feel a strong power from behind there... it seems uncontrolled though.' Tansa noted as they walked into the main clubroom.
We walked into the room, and unsurprisingly there was already other people there. One was a brown-haired boy wearing the standard Academy uniform, with a red undershirt and blue sneakers.
The next was a blonde-haired boy with the same uniform as the others. Unlike the brown-haired boy who looked average in terms of looks, he was slightly better looking. But not anywhere near Tansa's level.
There were also two females in the room, one petite girl with white-hair down to her shoulders and the other a slightly taller and more pronounced figure with blonde-hair that ran down her back
'Must be her servants.' Tansa thought, looking around as Rias went to sit behind the desk.
"Welcome, Tansa-kun, to the Occult Research Club."
"Occult Research Club? A fitting name for a group of Devils." Tansa said, chuckling.
Everyone looked shocked at this. He knew what they all were? How?
"So you did know about us. I could feel it when we shook hands... you are very powerful, much more so than myself. That much is clear." Rias stated, and all the others went wide-eyed.
"That begs the question, what is someone as powerful as you doing here?" She asked, and her servants all got into attack positions.
"Calm yourselves. I am not here for a fight, and I certainly do not have any plans to attack my own kind." Tansa said calmly.
"You're a devil? But why can't I feel any devil presence from you?" The white-haired girl asked.
"That is because I am currently masking my presence entirely. Just like Rias-san said, you'd have to touch me in order to feel anything from me."
"Mask it entirely? Do you know senjutsu?!" The white-haired girl yelled.
"No. This is just my level of control over my power is all." Tansa said, and the white-haired girl calmed down considerably.
With that everyone sat down on the couches again, and the questioning continued.
"Well, Tansa-san, if you are a devil what clan are you from, if I may ask?" Rias asked
"I would prefer to not say exactly. I, like anybody else, has secrets I would prefer not to talk about."
Everyone nodded in agreement at his statement
"But I can say this, I am from an extra demon clan." I said with a tone of finality that left no room for any further questioning on the subject.
"Very well, that should suffice for now. So Tansa-san, let me ask you this. Would you like to join my peerage?"
At this, Tansa started laughing.
"I apologize, Rias-san. But I must decline, I have no intention of being a servant. And even if I did, you are too weak to make me your servant anyway."
"Hmph, fine then. But would you at least join our club?"
"That's acceptable." Tansa said and she smiled.
"Good. So what are you doing here at this school?"
"I am here on a job. I can't disclose the details but I will be here for the foreseeable future. Pay no mind to me and do your devil jobs as you normally would."
"Very well, Tansa-kun. Then we, the Occult Research Club, welcome you!" She said
""""Welcome!"""" They all shouted in unison.
Yo, my first fic. Review and comment.
Also this won't be a powerpowerpower fic. Tansa is strong, but he will take a passive role (mostly) in the story. Will follow cannon events for the most part, with a few small arcs involving Tansa past and how it will come to haunt him later.
Also, Tansa won't steal anyone from Issei's harem. Except maybe Xenovia and Akeno, as they are more likely (imo) to be attracted to Tansa over Issei.
Last, why might I start it after the Asia arc? I don't particularly like the Asia arc.
Next chapter will be Riser arc! Later.