Seikichi Kuroda, the self-proclaimed "guardian" and leader of the thugs at Hekikuu High School, learns about a new transfer named Seiichirou Kitano who is allegedly terrorizing everyone in his class. Seikichi plans to use his authority to intimidate Seiichirou, but things take an unforeseen turn when Seikichi comes face-to-face with the new student. Seikichi is frightened by Seiichirou's chilling and terrifying face. Nevertheless, behind his frightening appearance, Seiichirou is a kind-hearted person. Due to his poor communication skills and scary looks, he has always been an outcast among his peers, unable to express his true self to them. As the new "guardian," Seiichirou learns that true friends can be found in the most unexpected of places and circumstances.