A degenerate middle-aged man, Kakei, suddenly had his daughter Miku appear before him. She was the daughter he had with his ex-wife. Their aimless cohabitation began, but for this messed-up middle-aged man, the daughter who suddenly appeared was only someone who brought him his monthly horse racing money. Amidst such chaotic days, debt collector Okabe comes to collect. When Okabe expresses his surprise at Kakei living with a young woman, Kakei makes a shocking proposal. "…Okabe, how about this month's payment in exchange for her body?"
