Yuko was troubled in her marriage and confided in her close friend Nagisa. Her husband Shinji's possessiveness stemmed from deep love, making it difficult even to meet Nagisa without his permission. Learning of Yuko's situation, Nagisa secretly smirked and devised a plan. While listening to Yuko's worries, she gently urged her to drink, creating a fun and relaxed atmosphere for both. That night, after seeing Yuko home, Nagisa joined Yuko's husband Shinji in carrying the sleeping woman to bed. Watching Shinji worry over Yuko, Nagisa gazed at him seductively and softly placed her hand on him. Taken aback by her sudden kiss, Shinji found himself caught in an unavoidable moment as their bodies entwined.