The Devil's Child

Imagine a quirk so strong that its mere existence is a threat to humanity, let alone it being born to villains. The only way to save humanity from its evil grasps is by eliminating the child who wielded the quirk - The Devil's Child.
But All Might couldn't just let a child be executed in the name of justice. Together with Aizawa, Gang Orca, Sir Nighteye and Hawks, he took the responsibility of giving this child a new life, free from evil, free from doubts.
10 years of training later, Yagi Anni (Annihilate) has finally cleared her name as a potential threat and is free to roam in the outside world, given that she becomes a pro hero. Joining UA in Class 2-A, with her adoptive father's successor Deku, she aims to fight for a world where no child will ever have to go through anything she went through, she wants to be the hero to all those who needs an All Might.
But given her limited social interactions and lack of understanding of human psychology, will her PTSD fueled dumbass manage to form a team with the UA students, or will her trauma return with her suppressed memories and render her weak against the evil quirk mutated into her body and deem her existence a threat once again?