Until He Returns, I'll Enjoy Myself

A frustrated full-time housewife, Nanami, has lost confidence in her role as a woman due to her husband, Manabu, a busy doctor, consistently coming home late and ignoring her. She spends her days without intimacy or appreciation. When Nanami encounters her husband's younger brother, Nozomu, while shopping for a birthday cake, she invites him over, and he accepts. As they wait for Manabu's return, Nozomu feigns drunkenness and touches Nanami, sparking a newfound pleasure that leaves them unable to stop their developing relationship.