Husband Kenji came to his wife Kiyoka's parents' house to prepare for childbirth. Her older sister Iroha, who divorced her father several years ago, lived in her parents' house. Kenji, who has been refused sex since Seika became pregnant and has accumulated libido, has become obsessed with the erotic pheromone Iroha with a plump body. While watching Iroha change clothes, Kenji can't stand it anymore, so he steals Seika's eyes and approaches Iroha...
