Tachibana Eiji, an office worker, researches and develops androids for his job. However, Eiji is not good at socializing, so he struggles to create an android that can relate to people. He does not have a girlfriend in his private life, and spends his days having ad hoc sex with men he meets on a gay-only matching app to fill his loneliness.

Then one day, Eiji discovers a sex club where androids serve customers, and he steps into the club for reference. There, he met a sex android named “Theo,” who had a well-dressed appearance and was made of elaborate parts that he had never seen before.

Although he had no intention of being served, Theo told him that he was confident in his sex skills, and touched him without hearing his cries of restraint.