Prologue

You grew up in a family of assassins - therefore receiving intensive training and torture from a young age. You were believed to be quirkless, but one day, a certain "incident" occurs that finally reveals the truth behind your quirk. Immortality.

Going against your family's wishes you enter U.A, under the false impression that your quirk is simply called "Assassin", and that you will use it for good. How will your life turn out, and how will people react when they find out the truth?