Toumei Ningen↑↓Kyoutei

Kyoubei Kurokawa, a university student without direction, leaves home and finds himself without shelter. He is rescued by Asumi Nanjou, a classmate who brings him to her apartment to care for his wounds. After learning of his living situation, she offers him a place to stay with the condition that he must be treated as invisible. Nanjou acts as if he does not exist. Kurokawa experiences the benefits and drawbacks of this unusual arrangement while seeking to understand the reasons behind Nanjou's behavior.