Kyoichi Otomo is a passive, drifting corporate worker who has habitual difficulties maintaining fidelity, often dating women simply because they throw themselves at him. His complacent existence is upended when a private investigator named Wataru Imagase approaches him at a bar. Imagase is not a stranger; he was a junioring student from Kyoichi’s university days. More importantly, Imagase reveals he has been hired by Kyoichi’s suspicious wife to gather
photographic evidence of Kyoichi's extramarital affairs.Instead of exposing him immediately, Imagase strikes a seductive, high-stakes bargain. He agrees to conceal the damning photographs from Kyoichi’s wife in exchange for a deeply intimate reward: Kyoichi must allow Imagase to kiss him. Though initially reluctant and bewildered, Kyoichi complies, setting off a slow-burning psychological and erotic entanglement. As Kyoichi’s marriage inevitably collapses under the weight of his infidelity, Imagase moves into Kyoichi's apartment.What begins as a transactional arrangement born of blackmail gradually morphs into a complex emotional dependency. Imagase is desperately, hopelessly in love with Kyoichi, carrying a torch that has burned since their college days. Kyoichi, conversely, is a man who merely goes where the current takes him, unable to genuinely initiate affection yet increasingly comforted by Imagase’s unwavering devotion and physical warmth. Their domestic life becomes a delicate dance of domesticity, raw sexual encounters, and unspoken emotional boundaries.The fragile equilibrium is threatened by the ghosts of Kyoichi’s past. Natsume, a former female colleague from Kyoichi’s office, re-enters his life. Natsume still harbors lingering feelings for Kyoichi and tries to pull him back into a traditional lifestyle, acting as a catalyst for Kyoichi to confront his deep-seated
fear of commitment and his inability to express genuine emotion. Imagase watches with mounting jealousy and heartbreak, realizing that despite sharing a bed and an intimate life with Kyoichi, he may never truly possess the straight man’s heart.Tensions reach a boiling point during an emotionally charged confrontation where the underlying pain of unrequited love and codependency is laid bare. Kyoichi is forced to look inward, shedding his trademark apathy to evaluate what he truly wants. In the poignant climax, Kyoichi realizes that Imagase has become an irreplaceable anchor in his chaotic world. Rather than letting him walk away, Kyoichi chooses to embrace the complex, unconventional reality of their bond. The narrative resolves not with a traditional happily-ever-after, but with a quiet, bittersweet acceptance of a profound connection built on vulnerability, longing, and the courage to finally surrender to love.