Prologue

Y/n L/n, a common thief at thirteen, ran into one of the biggest villain's in history, All for One. She had heard of him before from other villains but she never thought she'd come face to face with him.

Though, she made quick friends with him and became his personal house pet. He usually preferred cats or a ferrets which was fine with Y/n, but when All for One sends her away, she is sent to care for a boy name Tomura as a guide.