After six years of marriage, Nanami began working part-time to support the household. At work, she faced constant sarcasm, and at home, her husband ignored her. Worried about her struggles, her coworker Kenji, a college student, invited her out for drinks, and the two soon embarked on a forbidden affair. With each encounter, Nanami blossomed into a beautiful yet lustful flower of infidelity. Like drowning in desire, she sank deeper and deeper into the illicit relationship. Trapped in these overwhelming emotions, her heart gradually transforms. Her marriage slowly crumbles, and as her affair reaches its climax, anticipation builds over what fate awaits her at the end of this illicit romance.