During a job interview period, the Tanihara family decided to let their brother-in-law Kensaburo stay for several days. During this time, Kiyomi, the wife, felt slightly tense because her husband was away on business, but before she knew it, they had become more comfortable with each other and were enjoying late-night drinks together. However, after drinking alcohol, Kiyomi's body ached from loneliness in bed, leading her to masturbate. Unaware of anything, Kensaburo entered the room and saw his sister-in-law in an indecent pose he couldn't imagine from her usual self. His suppressed reason completely flew away, and before he knew it, he was lying on top of Kiyomi on the bed…
