Yometori x Gekokujou ~Wagamama na 3-nin no Ane ni Gekokujou Sex!!!~

Kazuki Sawanoi's parents just told him he's adopted. Not only that, they've issued an ultimatum: he has to marry one of his sisters after he graduates......!? Yometori x Gekikujo, an erotic visual novel about a young man picking a wife and the youngest ruling elders!