Soukan Yuugi  

Incest Game, Sexual Pursuit, 상간유희, 相姦遊戯

Yuji recently purchased a new board game that he is eager to play. However, what he doesn't realize is that this game has hidden powers - specifically, sexual ones. He and his stepmother decide to give it a go. The game involves drawing cards with instructions on them related to sex. Initially, the experience seems harmless, but as Yuji continues playing, he begins to develop feelings for his opponent. As the tension builds, the game eventually leads to a wild sexual encounter between him and both his stepmother and stepsister.