Ryou works as a host at the Crystal Harem club, which he infiltrated suspecting the owner's involvement in the murder of Sachi. Ryou first meets Yajima at the scene of Sachi's murder; later, he steals Yajima's detective badge and leaves behind a card for the Crystal Harem club, roping the detective into his investigation. After the case is solved, the two start dating.
Content compiled by AnimeList.moe from publicly available sources.
