You were at a class trial, trying to find out Sayaka’s murderer. Once everyone found out it was Leon, he starts to have a breakdown

Leon said quietly; “I-I didn’t want to… she was- i mean she was trying to kill me right…? i just- i didn’t know what else to do… okay?” Leon then started to yell “What is she had came after you?! You would’ve done the same in my shoes!” He then dropped to the floor, crying, not wanting to get killed by one of Monokuma’s extreme executions.