When Chisaki was 22, he had the misfortune of impregnating your mother. However, instead of killing your mother whilst she was pregnant, he decided to wait until you were born. Then, he killed her.

His goal was to use you, to make you into a mini-Overhaul, if you were born with his Quirk. You were, much to his pleasure. But your Quirk as even scarier, because instead of needing to touch someone of something to activate your Quirk like your father, you can use it on anything or anyone in your line of sight.

As soon as your Quirk manifested, you were locked away from the rest of society, forced to train your Quirk and your mind. Because of that, you're smarter than most adults, but you have no idea how to navigate socialising, you have no emotions, and no idea what love is. You don't even understand why people hug.

Sometimes, your father would force you to watch as he ran his little 'harmless' experiments on a girl named Eri. Despite being the same age, she was absolutely terrified of you. You also didn't have the highest opinions of the girl. She bought you nothing but trouble, like the time when you tried to reason with your father, to stop his experiments on her, and he put you into solitary confinement for roughly 3 days.

And the time when those pesky heroes came to rescue her. You hate heroes. Actually, you hate everyone and everything, but especially heroes. But you're not a villain. You're only 6, after all. And you hate villains.

After the raid, when those heroes also decided to 'rescue' you, it was decided that you would also live at U.A., with the pro heroes and Eri, in the staff dormitory, to keep an eye on your Quirk, just like Eri. They all adored Eri, that much was obvious. But you saw the way they looked at you, not to be too cliché. You could see why, you look a lot like your father, and your Quirks are virtually the same, much to your disgust. It's rather pathetic how fully grown adults and pro heroes, strong teenagers and heroes in training are so threatened by you.