Shinku no Soiree - Cardinal Soiree

The protagonist awakes to find himself washed up on a beach. All he remembers is his name and knowledge about circuses. All he owns is a deck of cards and a compass. And lying next to him is a girl he doesn’t know.

The two of them look for help, but the townspeople won’t have anything to do with them. While at a loss for what to do, they meet a lone man, who invites them to work for his circus company. Due to his circus knowledge the protagonist is hired as an instructor. Will he lead his performers to an artistic circus that gives his audience dreams? Or will the curtain rise on a carnal soiree of lust?

The decision is in his hands.

[Translation of synopsis from Getchu.com]