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Tsukina and Ryouki have been dating since their teenage years. Unfortunately Ryouki has developed a obsession with cleanliness that has left him unable to even touch Tsukina. Eventually agreeing to start therapy for his condition, Ryouki meets Chiharu, a young woman suffering from the same issue as himself, and begins to form a connection. At the same time Tsukina meets a handsome Korean man who shows an interest in her.