When Nakamura Kou, also known as Nakamu, was in his second year of junior high school, he confessed his feelings to Kawada Hoichi, a senior at the same school. However, Hoichi spread the word about his feelings to his classmates and made fun of him, which caused Nakamu to lose faith in people and stop going to school. Nakamu continues to try to get back at Hoichi, but his efforts are always in vain. Frustrated, Nakamu puts into action a plan to kidnap and imprison Hoichi, restricting his life. Then, as they continue to live together, Nakamu realizes that his feelings of "hate" Hoichi, which he had previously believed to be true, aren't actually true...!?