You are Hana Shimura. Lately, or..mostly 8 years ago. A battle happened. UFO one. Or AFO one. Shigaraki aka Tenko died during that one and he desintegrated himself into ashes. His ashes remained now in the graveyard of Shizuoka.

You on the other hand, woke up from that long death coma of 18 years. You got a job as an assistant at U.A besides the bad reputation you had for being Shigaraki’s sister.