Single Slice (Villain Deku/Traitor AU)

Prologue

Two young twins, age fifteen, walked in front of the gates to UA, and entered, merging with the crowd of other boys and girls, each with the same goal: Enter the hero course.

One of the two boys had pale blue, curly hair, and large scratches all over his scarred face. The other had pitch black hair, which was styled the same as his brother, with freckles covering his cheeks.

The teen with blue hair had a relatively powerful quirk, being decay, which did as the name suggests whenever he touched a surface with five of his fingers. His brother had a similar quirk, called sever, which allowed him to fully slice through anything in direct contact to the surface his five fingers touched, as long as it was in his sight.

"What do you think, brother? Is this really the right choice?" Tomura Shigaraki asked, in his raspy voice, as they walked into the auditorium.

Ikari Shigaraki's eyes narrowed, "Too long have we waited in the shadows. This is the best road to take on the path to ensure that the world remembers our names forever..."

...

"This year is full of an array of promising students, it seems," The principal of UA High-school, stated, as he sat in his chair watching the entrance exam take place on the screens in front of him.

Behind him, one of the heroes, a quiet and stealthy pro known as Eraserhead, peered at the cameras closely, noticing two boys who were eerily similar to one another. One of the boys seemed to make the robots disintegrate with ease, while the other appeared to cut them clean in half effortlessly, both of which with the single touch of their hands.

"Nezu," He spoke to the Chimera, "Would you mind if I have a closer to look to a few of the contestants?"

The principal laughed in delight, "You? It's not often anyone piques your interest," He lifted his hand and motioned for the black haired man to step forth.

Doing so, he grasped a computer mouse on the console in front of them and dragged it on top of the first of the two boys. Clicking on the spot, a window with the examiner identification card opened up onto the screen being accessed. It displayed a pale, blue haired boy, sporting a serious look on his tattered face, with the name "Tenko Fujii". Normally, the student's application would hold all of their schooling information. However, all his account said was "Homeschooled", which was definitely odd.

Looking next at the quirk info, all he saw was the word "decay". It at least explained somewhat why he was able to destroy the robots. It looked to be a quirk with a considerable amount of power behind it, and if Eraserhead was being honest, the kid's face matched the assumed effect of his quirk.

Just a bit unnerving.

Breaking him away from his thoughts, Nezu spoke aloud, "This new identification technology was really a good investment. Yes, putting trackers on their examinee cards may have been one the best ideas this school has implemented,"

"It certainly is convenient," The curious hero muttered.

"Indeed. Did you find all that you were looking for?"

"Not quite. There's one more student I'd like to look up," He said, clicking the "X" on the top left corner of the page, and turning to the screen which he'd seen the other boy on. Moving the mouse across the multiple monitors, he then clicked the second of the two, seeing multiple bits of information that left him both surprised, and dissatisfied.

The 15 year old kid, labeled "Izuku Fujii", was similar to his apparent brother, Tenko, in more ways than one. Their hair, despite the difference in color, had the same thick curls. They also had the same eyes, both in expression, and in looks. Both had piercing, blood red orbs, speaking only of rage and anger. They even had quirks that were relatively similar, both giving them the ability to destroy whatever they came into contact with. The info he'd been able to acquire about this "sever" quirk was anything beyond what he'd seen on the camera, but it was far enough to know it did significant damage.