When my wife returned home after giving birth, her sister, Kyoka, came to help out with household chores while she was visiting. I gladly accepted her offer, not knowing that her true intention was to satisfy her own desires. Unaware of Kyoka's ulterior motives, I continued working around the house when she started making excessive body contacts during cleaning. As I blushed and tried to escape, she teasingly asked if I wanted her body now since there was no one else around to see us.

嫁が里帰り出産のために帰省中、嫁の姉・京花が家事を手伝いに来てくれた。仕事と家事の両立に四苦八苦していた健二は快く招き入れるのだが、京花の本当の目的は身体だった。そんなこととは露知らず、掃除に勤しむ健二に過剰なボディタッチをしかける京花。顔を赤らめ逃げる健二を追いかけ「今なら誰にもバレないよ。この身体欲しくないの？」と危険な誘惑をしてきて…。