Nana Aya, Lace Trim Unbanned, I Fell in Love with My Stepsister, IESP-711

Aya and Rika became sisters due to their parents' remarriage. The two sisters began living together even before their parents. Rika tells Aya she's a lesbian and actively approaches her. Aya, who has a boyfriend but has never considered having sex with a woman, falls into a world of ecstasy she's never experienced before. She even feels she can't live without Rika…