Gokujou!! Harem Kan

A boy named Nagisa ends up becoming a male prostitute working at the Mugen mansion on account of him having a huge dick! At the Mugen mansion, the wealthy women are, it turns out, the customers of a super high-class brothel!! The female customers just keep cumming because of Nagisa's natural big dick! His customers range from a gold medalist to the daughter of the President of a certain Western country! However, Shiori - the girl who Nagisa had a crush on for the longest time - arrives at the Mugen mansion!? (Source:.