Back Street Girls: Gokudolls

The story revolves around Kentarou, Ryou, and Kazuhiko, former yakuza members who were forced into sex reassignment surgery and trained to become pop idols as part of a deal to avoid organ harvesting. The three, now known as Airi, Chika, and Mari, form the amateur idol group The Goku Dolls. Their yakuza background, however, still lingers, prompting their boss to hire Mandarin Kinoshita, an experienced manager known for his success with idol groups.