While his wife was back in her hometown to give birth, her sister Kyoka came to help with the housework. Kenji, who was struggling to balance work and housework, welcomed her in, but Kyoka's real goal was to have sex. Unaware of this, Kenji, who was busy cleaning, started to touch her body excessively. Kyoka chased Kenji, who blushed and tried to run away, and dangerously tempted him, saying, "No one will find out now. Don't you want this body?"...