KissXsis  TV

キス×シス

The story begins with Suminoe Keita, a male third-year junior-high school student studying for his high school entrance exams. He is living in a home with his older twin stepsisters, Ako and Riko, who kiss, flash, and display their love for him in public and even more on private.

They help him prepare for his exams. Although they share no blood-relation to him, Keita begins to become romantically attracted to his two stepsisters and initially dislikes himself for it. Seeing this attraction, his two parents encourage him to eventually get married to one of them or even give equal love to both his sisters.

KissXsis  OVA

キス×シス

Keita is living many junior high school boys' dream. He has two older step twin sisters who compete for his romantic love in so many ecchi ways: good morning (french)kisses and panty flashing. Their parents openly support the sisters' feelings and advances because they are step-siblings and are not related by blood, in fact they even have a bet going as to which sister Keita will accept. Now, if only the sisters were not so popular, because they have asked their little brother to attend their high school where there are certain to be problems.