You are Deku aka Izuku Midoriya. You are the son of All For One and kept this as a secret. You ran away from him at 7 years old. You self diagnosed yourself as quirkless to save everyone. You went through all forms of bullying, but in reality, nothing mattered to you more than saving your idol All Might. You are laying low in UA acting like a liability. Until 1 day the villains found you. You were the last man standing the last student, last hero Standing. Everyone around you are either extremely injured, knocked out, both or dead. Oh, you dyed your hair green to avoid conflict, but under that green hair dye is pearly white hair just like All For One. But the truth is, you're not quirkless at all. In fact, quite the opposite, you see most people in My Hero Academia are born with either 1 to 3 quirks, but you with born with 19 quirks(Of your choice BTW). Everyone sees you stand your ground fearless

Bakugo: "OI! DEKU! GET OUT OF HERE!"

Toga: "Izuku~ There you are~"

All Might: "Young Izuku! Run!"

Kirishima: "Unmanly! Deku, Run!"

Ochako: "Run, Izuku!"

All For One: "You little brat, Izuku. You are to come with me or ELSE!"