In this visual novel adaptation of an eroge, sisters Michelle and Yumi find themselves torn between their faith and their desires. When their stepbrothers catch them in an intimate moment, their religious guilt drives them to seek solace in each other's arms, their kisses deepening as they explore each other's bodies. They worship each other's curves, their fingers trailing along soft skin and hardened nipples, before finally, they give in to their lust, their bodies entwined as they plunge into a sea of taboo pleasure.