Netorare Yūgi Dangerous Thursday.

Goro, who runs a detective agency, has no clients and is supported by his boyfriend, Kunihiko. Kunihiko, who works at a market research company, is relentlessly pursued by the company's president, Takuji. Eventually, Goro is offered a job as an undercover investigator, and he uses his detective skills to earn high praise. However, as his income increases, he becomes addicted to entertainment and his laziness becomes more apparent. Meanwhile, he has a relationship with a mysterious man named Mamoru whom he meets at a gay bar, and their actions at a hotel are secretly filmed. When Takuji questions Kunihiko about his declining performance at work, he is instead seduced, and a small camera is installed in the president's office. Betrayal and desire become intricately intertwined, and Kunihiko's desire to protect his lover finds himself caught up in an organized conspiracy.