Aoki Soubi is an orphan who travels to his mother's island hometown. Upon arriving he meets Tenyuu who warns that only men inhabit the island. Tenyuu know who Aoki is and kidnap him, telling him that he's the last of a bloodline that can bear female children. Tenyuu and his brothers, Yuki and Kaitou, become Aoki's lovers wanting to impregnate him.

Distinguised Noble Son, Shingo, as a person under debt, sold himself to Maruyama Red Light District’s greatest male prostitute brothel, Tsubakirou!
Furthermore, a few days ago he had met an impolite man. Zenichirou’s appearance…!
With a resistant heart and an arrogant attitude, unable to defy the shrewd man who divided the red-light district, Shingo has taken training from Zenichiro to become the best courtesan….?
The unexplainably beautiful and erotic techniques of a romance story!

From Cosmique Scans & Shinkirou Scans:

Shingo, the son of a well-known family, is sold to Maruyama’s red light district male brothel, “Tsubakirou” to pay off his family’s debt! Furthermore, the ill-mannered man he encountered days before, Senichirou, is there…

That arrogant manner of his, etched into his heart and he is unable to defy that man he was placed under – Senichirou. Shingo would be trained by him to become a top class courtesan…?

A heart rendering beautiful erotic love story!
There are cheerful tales as well.