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Takeshi Kiba, who works for an apartment management company, is sent to talk to a Mr. Yamodo, who is 3 months behind in his rent. When he gets to the apartment, he finds a man named Kyouichi Nakarai standing in the main room. Initially mistaking Kyouichi for Mr. Yamodo, Takeshi is embroiled in the search for the missing tenant - whilst wanting to get to the bottom of the relationship between Mr. Yamodo and Kyouichi.