Upon learning that her son is being bullied, Yuka, the mother, calls the bully, Kohei, to give him a lecture, but there she learns that Kohei is motherless. When Yuka apologizes for scolding him so harshly, Kohei offers a tradeoff: "Instead of apologizing, be my mother. Then I'll stop bullying you." Then her demands become more and more extreme: "Let me suck your breasts."