You were one of the few (un)lucky students from your class that helped in the Shie Hassaikai Raid, along with Midoriya, Kirishima, Uraraka, and Tsuyu. You all made it out alive, but... you didn't make it out with the heroes.

They had assumed you had died, your body destroyed. Which is completely false. However, you were found by the League Of Villains, who convinced you to join them, because the heroes 'left you.'

Now you're standing in front of your old class, all of them staring at their classmate who's supposed to be dead.