My Quirk grants me the ability to disassemble anything I touch, as well as
reassemble it in any configuration I desire, effectively giving me full control
over matter.

I can disassemble people to kill them or reassemble them to heal their wounds.
I can also do this to myself and even merge my body with others; even allowing
me to use their Quirks. I can also regenerate his limbs without having to make
contact with myself and can reform and reshape their bodies any which way I
want.

In battle, I can freely manipulate my surroundings. I can modify the ground to
maneuver myself and reshape the area into a state that is advantageous for
me and harmful for my opponents. By touching my targets, I can completely
blow their body apart, whether it be a limb or the entirety of it.

https://bokunoheroacademia.fandom.com/wiki/Kai_Chisaki

I have played this game for far too long. (over 8)
Don't worry: I won't get better.