Her mother, Mio, was a carnivorous woman who would use her beauty and body to get any man she set her sights on. Kanako was confident that even her mother would never make an advance on her daughter's boyfriend, so on that day she invited him over to her home for the first time and introduced him to Mio. She hoped that the two would get along well. It was an action she took purely out of pure feelings, but... The moment she saw his young, muscular body, a forbidden switch was flipped on inside Mio. The moment Kanako left the table and they were alone, Mio put on a seductive smile, pressed her body against his, and whispered in her daughter's boyfriend's ear, "Don't tell my daughter, okay?"