Kana and her husband have been dating since college and soon got married. Although the two have never quarreled or had an affair so far, their relationship seems to be getting more and more distant. Oki is Kana's husband's boss, and he always helps her husband. It was raining heavily today, and Kana's husband was too drunk, so Oki had to take him home. Because it was raining heavily, the Oki people were soaking wet from the rain, so Kana invited him to go into the bathroom to wash, dry his clothes, and wait for the rain to stop before returning. When he handed the towel to Oki, he suddenly walked out naked. Although he quickly left, the image of Oki's big cock was deeply imprinted in Kana's mind. Oki also discovered from Kana's eyes that she was sexually deprived. Sure enough, when Oki touched Kana's body, she only resisted extremely weakly. Brought by the water, Oki gradually took over Kana's body. And since then, Kana can't forget the feeling of happiness that Oki brings. Every day when her husband comes home from work, she always hopes Oki will come with him, to enjoy the sexual pleasure that her husband cannot provide...