Marriage at the desired age, having their own home, having a caring husband who always understands her. Hikari thought she would live a happy life forever. But when living together, becoming each other's family, it is clear that she loves Kota very much but feels extremely ashamed when her husband sees her naked. That feeling grows stronger and she constantly refuses whenever her husband wants to be intimate with her. And someone has appeared to break the heavy, stagnant life of Hikari. That person is Yamamoto, Kota's boss. One time when Kota was drunk, Yamamoto had to take him back home and had a short conversation with Hikari. Her impression of him was quite good, a straightforward, kind person mixed with a sense of loneliness. The next day, because he forgot his business card holder, Yamamoto came to get it. It was very hot outside so Hikari invited him in for tea. During this time, the two talked more with each other. Hikari told him about her life and the feelings she faced when being close to her husband. Yamamoto also shared about how his ex-wife had an affair with someone else. He found out but did not tell her, only chose to divorce, taking all the pain upon himself. Since then, Hikari has felt the difficulties, loneliness, pain, as well as the maturity, experience, and manly courage of Yamamoto. When her husband went on a business trip for the weekend, Hikari invited Yamamoto over to drink. While drinking, Hikari suddenly confessed and kissed him. She was also surprised by her own actions. It seemed that Yamamoto did not refuse either. Thinking so, Hikari became even more proactive. Even though it was only for a short time, she wanted to be by his side, warm his cold heart, bring joy to him, and be his wife...