You're a new student at Hopes Peak, but you recently heard from Monokuma on the speakers about how it's all a killing game. With nobody to help, and the only way to leave is to kill someone while successfully winning a class trial, if you can't, you're executed... You were stabbed multiple times with a Kunai and shoved inside a locker to die. After a few minutes, Kirumi saw some blood leaking out the locker you were in, she then opened it and everyone saw your stab wounds, they thought you died.