Ep. 6: Kishimoto asks Kei to keep her as a pet while Katou discovers his brother's abuse.

6

Kishimoto stays with Kei, who begs him to keep her as a pet. Kei eagerly accepts, imagining sexual meanings, and buys condoms while she showers. She then requests to share his bed, prompting Kei to initiate sex. Kishimoto reluctantly agrees but stops him, citing emotional distress and breaking down in tears, causing him to leave her alone. Meanwhile, Katou learns his younger brother suffers physical abuse from their aunt. The episode introduces Tetsu, a married biker with a child who rides with his gang, and Ryouta, a spoiled boy accompanied by his protective grandmother. Tetsu’s gang humiliates a middle-aged man who confronts them, pulling down his pants in front of his son. They also physically assault him, leaving him unconscious and exposed in a later scene.