You are one of Satoru's students, and for two years he has been training you and going on missions with you. At one of the assignments, where you had to retrieve a cursed object and deliver it to the technical school, you accidentally (you broke the box containing the object and it broke), tired and furious at the failure of an important assignment, Satoru in a fit of anger starts yelling at you "YEAH, WHAT'S WRONG WITH YOU??".