Having come to Canada upon hearing the fake news that his mother Haruko is in critical condition, high school student Kaidou Haru meets a young boy named Ren. Haru is forced to spend the summer with Ren. Every day is a battle.

Just when Ren begins attending school, he's seen kissing Haru goodbye by his classmate who is curious about their relationship.

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.

Ren manages his school life with the help of his classmates, but he collapses during a PE class.

Haru's cafe "WHITE FANG" begins flourishing immediately after it opens. Even Haru and Ren's recently awkward relationship is getting back to normal. However, Aki is in a terrible mood.

Haru suddenly awakens to the sound of rain in his room. Shaken by the sight of Ren in his dream, his breathing becomes erratic. Realizing the reason for his dream, the next morning Haru questions Ikuyoshi.

It's Ren's first summer vacation in Japan. The landlord of the apartment he and Haru once lived in hires him to clean one of his apartment units. Haru becomes unbearably curious when Ren refuses to tell him why he got a part time job. Kiyoka suspects Kiri, Ren's female classmate who has been coming over with her dog to hang out. Meanwhile, an unknown man approaches Ren.

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 Ren is sick of being treated like a child.

The accident that made Haru lose his parents seven years ago left him on the brink of death. Though he made a miraculous recovery, he hasn't gone to the hospital for a checkup since he was released, so a concerned Aki and Shima ask Ren to take him there. Unaware of the situation, Haru believes Ren is taking him on a date, but they end up at the hospital. While waiting for Haru in the waiting area Haru's psychotherapist Mori strikes up a conversation with Ren.

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. Meanwhile, Natsuo is experiencing emotions he can't express in words. His irration with the former number one host "Natsu," and his childhood memories of Haru. As this is happening, he hears the Kaidou family has decided to hold a birthday party for Aki and Shim.