The Kashiwagi family's life story continues. Koume finally gets into an university, while Masaya decides to travel round the world to save as many people as he can with his skills. Fumiya, on the other hand, breaks through his inferior feelings and is dating a blind penpal girlfriend. Meanwhile, Kazuya builds a strong relationship with his colleague, Miki, who then moves in with the Kashiwagi family after her mother's death, adding to the strength of the family together with the other new tenant, Shinjou. However, the love triangle between Tatsuya, Masaya and Koyuki is put to the test when one of them must battle a terminal illness.