Erina, whose husband is always busy with work, consults her father-in-law, who lives with her, about their relationship. Erina is worried that her husband might leave her, but her father-in-law gently encourages her. His Kokoro response makes Erina open up to him, but... The next moment they are alone, her father-in-law, who has become a man, forces himself on her. He has his eye on her beautiful and attractive body...