Shiro is a kind-hearted man living under the strict rules of his wife, who only permits intimacy during her most fertile days. With a high libido and a desperate desire to start a family, Shiro finds himself forced to abstain from sexual release to ensure his sperm count remains optimal for conception. He spends his days in a state of constant tension, struggling to suppress his natural urges while waiting for the designated time to try for a baby. The pressure of his domestic situation leaves him physically and mentally exhausted, constantly balancing his duty to his wife with his own intense, unfulfilled sexual cravings.
Everything changes when his sister-in-law, Itsuha, returns home for her weekend visit. Having moved out to pursue her career, Itsuha is observant and quickly notices the palpable tension radiating from Shiro. Sensing his vulnerability and the pent-up frustration he has been hiding, she decides to take matters into her own hands. As Shiro finishes his third day of strictly enforced abstinence, Itsuha makes a bold move. She enters the bathroom while he is alone, completely naked, and begins a deliberate, provocative seduction that tests his resolve to the absolute limit. She is determined to draw out the passion he has been forced to store away.
This intense encounter captures the raw chemistry between a man on the edge and a woman who knows exactly how to push his buttons. As Itsuha works to drain the energy Shiro has been carefully saving for his wife, the scene escalates into a high-stakes display of desire and forbidden temptation. Watch as Shiro finally breaks his discipline, surrendering to the immediate pleasure offered by his sister-in-law in this captivating JAV-style drama. Experience the full, uncut intensity of this secret tryst and see how far Itsuha is willing to go to satisfy her own curiosity.