On his summer vacation Haru visits his mother in Canada and she burdens him the responsibility of taking care of her newly adopted child. Ren is a small, anti-social little boy who doesn't trust anyone but when he meets Haru, his life gradually changes.
Since Haru declared that he belongs to Ren, Ren has stopped making unreasonable requests. Though plenty of women still come to the cafe, Haru has begun flatly rejecting them, and their days are peaceful.
Unable to stand being treated like a child by Haru, Ren leaves the house. Natsuo agrees to let Ren stay over, but Haru shows up just as he's about to grant Ren's request to do something that he "can't tell Haru about."
Haru's mom pays the Kaido brothers a sudden visit from Canada. What dose she know about Haru and Ren? What did Ren tell her? Haru is afraid he will get into some trouble.
While Haru and Ren are out at a nearby zoo, Aki calls Haru to let him know a woman calling herself "Kiyoka" has showed up at the house. Kiyoka is Haru's high school classmate and the co-owner of the cafe they're about to open.