Kumagami is a mysterious student at Hoshinoumi Academy. His ability is being able to locate anyone who possesses an ability. He has to get soaking wet while fully clothed in order to use his ability. He helps the student council find ability users.
In episode 9, it is revealed that he was one of two people who were held captive in research lab. He is one of Yuu's friends who helped him prison break his brother Shunsuke.
In episode 11, he is kidnapped and tortured in a factory by mysterious people. After Yuu accidentally uses his collapse to bring the factory down, Pooh saves an unconscious Nao from the debris. He succumbs to death from his injuries while in Shunsuke's arms.