Due to her husband's promotion, his workload increased and their conversations grew scarce, leaving married woman Kana feeling increasingly lonely. As she's gotten older, her body has become more sensitive, and lately her sexual desires have intensified—she finds herself reacting strongly to even the slightest stimulation in daily life. One day, her husband's subordinate, Kawagoe, visits their home and ends up drunk after drinking with her husband. Kana reluctantly tends to him, and during the close contact, their bodies brush against each other—accidentally rubbing her nipples, causing her to involuntarily moan aloud. Seeing this, Kawagoe—drunk and harboring pent-up resentment toward his boss—gives in to impulse and begins forcefully stimulating Kana's nipples, initiating her into intense nipple orgasms.