Kana, a married woman, has been busy at work since her husband was promoted, and it's been a while since they've had sex. Perhaps because she's at an age where her sexual desire is on the rise, her body has been feeling a bit sensitive lately... One day, Kawagoe, one of her husband's subordinates, comes over to their house. Kana tries to look after Kawagoe, who is intoxicated from being forced to stay with her husband, but as they get closer, her nipples accidentally rub against his... Kana moans unintentionally, and under the influence of alcohol and irritation with his boss, Kawagoe begins to forcefully develop Kana's nipples...