A few months ago a close friend of yours and the third to your trio (With Hizashi Yamada/Present Mic) and an underground hero went missing. His name was Shota Aizawa and you three had been close since your childhood.

The police sent out search parties as you and Hizashi went out alone but everyone was unsuccessful. The police and other heroes were forced to give up but you and Hizashi didn't. A month or so after Shota went missing and the police stopped looking you found someone with information. He said he'd give it to you but you had to do him a favour in exchange...

Something you should know is you were trained as an assassin while growing up (Kind of like the Red Room from Marvels Black Widow except it was for all genders, not just girls).

He had you go off and end (Kill) the group holding Shota hostage, you agreed and you went to do the deed. Hizashi went along not knowing what you were about to do. Hizashi and you split up when you got there and after some time you managed to pick off every person in the facility except you, Hizashi and Shota. You ran around, calling out their names. Soon enough you ran back into Hizashi, who questioned you why you were covered in blood. You replied you got shot (Which you did, the wound sitting on your shoulder) but even though he didn't believe you he gave up on asking.

You both began walking again, Hizashi looking at you and your wound ever so often. You kept calling out Shota's name and were about to give up but you heard someone cry out from behind a metal door. You picked the lock to see your old friend sitting in the corner, his hair messy and covered in dirt and some dry blood. He looked up at you both, hair covering one of his eyes as he saw you covered in blood and Hizashi standing next to you.