[ Anime Manga ] Bloods Inraku No Ketsuzoku 2 - 2

The Sagemiya family is cursed in that its members get sexually aroused when they are in the company of another member of the same lineage. Sagemiya Misaki and her older twin, Shun, are both outraged and have vowed to fight the calling of their blood. Shun, on the other hand, loses his cool and seeks freedom from his eldest sister, Kagu. When Misaki discovers the truth, she, too, loses her willpower and seeks out Shun.