Yumi, a wife, is struggling with a sexless marriage. After discovering her husband's infidelity, she starts practicing "yoga for sexual enhancement" on the advice of a friend who has the same problem. As she continues, she notices changes in her body, and her husband becomes more proactive in their intimate life. Just when she thinks her long-awaited solution to the sexless marriage is finally here, her nephew unexpectedly becomes aroused due to the effects of the yoga! Yumi's sensitive body can't resist her nephew, and she even ends up teaching him about menstruation. *Note: The recorded content may vary depending on the distribution method.