I was invited to a tennis club for a change of pace, but I ended up getting closer to the coach than I did with tennis. Kana, whose husband was often away, took advantage of this by inviting the coach to her home for trysts night after night. Although she was known in the neighborhood as a serious and quiet housewife, in reality, she was sexless and starved for affection. She found release in her affair with the coach. However, Kana's good intentions were repeatedly seen by the building manager, who began to suspect something. And eventually, he witnessed the affair...