see red

S2, E4: Ren is forced into the car of a strange man. Natsuki, who bears a striking resemblance to Haru, claims to be the cousin of the Kaidou brothers. Shiba Natsuo tells Ren to keep it a secret from his brothers that they met, but Ren is met by Haru and the twins who were concerned that he was so late coming home. Haru tells Ren to quit his job out of concern, but sick of being treated like a child, Ren says, "I'm not a child"...