Kondo Hideki, 42 years old. Once secure in his future as the only son of a pharmaceutical company president, he took a leave of absence last year for reasons unknown. Now he lives at home. His current concern is his father's mistress, Reika. She is much younger than him and has insinuated herself into his father's position as president. Hideki's suspicion of her is at a boiling point. Meanwhile, his father goes on a business trip, leaving Reika at home. Seeing this as an opportunity, Hideki puts his hidden plan into action.
