Yuko is a beautiful, highly competent woman admired by many, including Yuki. However, her love life is troubled—she’s the mistress of section chief Higashi, a married man. During a business trip with Yuki, a big storm forces them to spend the night together. Due to Yuki’s mistake, they share a room. Yuki brings up Yuko’s affair, advising her to end it to avoid hurting herself and Higashi’s family. He confesses his feelings, wanting to make her happy. Yuko, skeptical, believes only physical intimacy brings women happiness. Yuki proves her wrong by passionately embracing her, kissing her, groping her breasts, touching her pussy, and fucking her! Still a virgin, Yuki lacks experience, so Yuko guides him to ‘graduate’ from virginity. Despite Yuki’s urging to leave Higashi, Yuko hesitates. To prove Higashi doesn’t love her, Yuki uses Yuko’s phone to call him. Though Yuko begs for words of love, Higashi refuses. Realizing her love for him is a fantasy, Yuko lets go and sees Yuki’s genuine care, ready to bring her happiness...