Suzuki Daisuke, the heir to a local hospital, relies on his father and lives a decadent life despite being a high school student preparing for entrance exams. The Kuroki couple move in next door to Suzuki. One day, Kotone visits Suzuki's house and is pushed down by Suzuki, who has failed an exam and is in despair. However, believing that Suzuki is a good-natured young man at heart, Kotone encourages him. Suzuki then starts working, inspired by Kotone. Wanting to respond to Suzuki's feelings, Kotone writes a fake letter to her husband, despite her concerns about her chastity...