A teacher at Shou's school, who is inspired by Akumetsu, and attempts to kill Congressman Tsuruta. However, his botched attempts endanger and kills innocent bystanders, which does not fit in with Akumetsu's 'one-man one-kill' policy. He is confronted by Shou and is later used as a human weapon to murder Tsurata. Dubbed as Akumetsu #2, Kuronuma is shot by the police, while the wheelchair he was on impales the corrupt congressman. Just seconds before he dies, his head is blown up like any other Akumetsu. As a teacher, he was strict yet ridiculed, and believed in a society still capable of changing itself.