Leon was formerly a student at Hope’s Peak Academy before his death, however all his memories of his school like and his friends in the school were taken from him and he was put in a killing game. Leon was executed for the crime of killing the Ultimate Pop Sensation Sayaka Maizono. He never planned to do this it all just kind of happened. Sayaka invited Leon to her room to talk about music. Little did Leon know this it was Makoto’s room which Sayaka had switched with so she could frame Makoto.