Combat Expert: Because he considers himself "the weakest person in the whole world", Kumagawa knows everything about the weaknesses of the human body, and can easily defeat multiple opponents by targeting their weak points. However, Kumagawa claims he couldn't defeat Medaka with this method as she has no weak points for him to exploit. Kumagawa's weapons of choice appear to be many large screws that he can make appear in his hands, regardless of what Minus he has. He can throw these screws with great accuracy.