Yuki Rio, the daughter of an old, prestigious family in Kyoto with over 1,000 years of history, enters into an arranged marriage at the age of 16 with a man she’s never met. Her husband is Takamine Masatomo, a handsome CEO in the IT industry. Every year on her birthday, she would receive 50 million yen, making their relationship one based solely on money. One day, after ten years had passed with no contact, Rio decided to move to Tokyo. She asks her husband, whom she’s meeting for the first time, for a divorce. On the other hand, Takamine finds himself unexpectedly attracted to Rio and doesn’t want a divorce. Thus begins a romantic battle between a wife who wants a divorce and a husband who refuses to let her go.
Sonoko enters into an arranged marriage set up by her parents with Amamiya. The couple tries to have a child, but they are not in love. Later Sonoko moves to Kyoto due to her husband's work and lives at a boarding house. There, she meets her husband's superior at work, Ochi, and falls in love for the first time.
In the wake of her grandmother’s death, Tsugumi Dozono, who used to work at a large electronics company in Tokyo, decides to move to the home her grandmother left behind in the countryside, and work from home. One day, a mysterious middle-aged man named Jun Kaieda arrives at the home wanting to stay the night. He tells Tsugumi that he is her grandmother’s ex-student and her grandmother gave him a key to the annex house. Tsugumi doesn’t quite understand the nature of the relationship Kaieda had with her grandmother, but the two begin living together in an awkward arrangement.
