Reiko and Tetsuya continue to live together. Reiko, who was informed by Kyoko that she was engaged to Takada, pretended not to be interested in her marriage, but in her heart, she wanted to marry Tetsuya. Tetsuya, unable to see through Reiko's true feelings, replies, "We shouldn't think about marriage until we're both adults and can live on our own." Meanwhile, Reiko's father, Shotaro, is stricken with cancer and receives a call that he has six months to live. In order to fulfill her father's wish, "I wanted to see Reiko as a bride while I was still alive," Reiko asked Tetsuya to marry him, and Tetsuya hesitated but accepted. However, Shotaro's doctor informs him that the cancer was misdiagnosed. While Reiko is relieved, she does not want to cancel her marriage to Tetsuya, so she proceeds with her wedding preparations without informing the people around her.

同棲生活を続けている麗子と哲也。京子に高田と婚約したと知らされた麗子は、結婚に興味がない素振りをしながらも、内心ではさらに哲也との結婚を望むようになる。哲也は麗子の本心を見抜けず、「俺たちがもっと大人になって自分たちの力で生活できるようになるまで、結婚なんて考えるべきじゃない」と答える。そんな中、麗子の父・正太郎が癌に侵され、余命半年であるという連絡が入る。「生きているうちに麗子の花嫁姿を見たかった」という父の願いを叶えるため、麗子は哲也に結婚を申し入れ、哲也は迷いながらもそれを受け入れる。しかし正太郎の主治医から癌は誤診だったと知らされる。麗子はそれに安堵する一方で、哲也との結婚を取りやめたくないため、周囲にその事実を知らせないまま結婚式の準備を進める。