Domestic na Kanojo

Synopsis

Rui meets Shuu at a bookstore; he treats her to a meal to apologize for the trouble he caused, and explains that he is now divorced but would feel selfish to reconcile with Hina. Hina moves out but leaves Natsuo a key to her apartment. Later, Rui finds Natsuo staring out the window in Hina's old room and hugs him. Natsuo goes to Hina's apartment and watches her sleep; she wakes up and he tells her that he is willing to die with her. They kiss, but Hina stops him when he tries to go further, saying that they shouldn't rush things. The next day at school, she confesses that she feels the same way and they kiss.

(Source: Wikipedia)