Izumi Fujimoto is an actress, known for Saiaku no sotsugyôshiki (2013), Sakamoto kun wa mitamne dake ga majime (2015) and Kamen byôtô (2020).
In middle school, Futaba Yoshioka was madly in love with Tanaka Kou but he moves away with his mother. She is reunited with him later in life but he is not the same person anymore.
Two sisters Tae and Yo come back to their old house which is soon to be torn down. Clearing up the family mementos, Tae finds a red box full of recipes and letters written by their mother who died 20 years ago. In these recipes and letters, she finds out how her mother had struggled in her life due to relocation from Japan to Taiwan, the death of her Taiwanese husband, and a battle with cancer. Tae travels to Taiwan to trace her mother's past, reminiscing about the dishes she made for the family.
When Sonoko enters a traditional Japanese arranged marriage with Amamiya facilitated by her parents the resulting union is loveless including the functional and goal-oriented sex. When the husband and wife move for his work she falls for her husband's boss and takes on the role of a betrayer.