kxs.

Keita Suminoe, a high school student, lives with his older twin stepsisters, Ako and Riko. The three share a close and complicated bond, as the sisters openly express their romantic and physical desires for Keita. Their relationship intensifies as they navigate their feelings in their shared home.

This doujin continuation of the original Kiss×sis series delves deeper into the explicit side of their relationship. Unlike the original, this story is fully pornographic, depicting the sexual encounters between Keita and his stepsisters without restraint.