Misa Eto is a Japanese idol, singer, actress, talent and former member of the idol group Nogizaka46.
A young bioarchaeologist Yukisuke is attracted to a girl Koyomi, who runs a small stand of taiyaki pastry that he often buys. Koyomi is hospitalized, however, by a car accident on a rainy day after they go out together, and wakes up with short term memory loss, where she cannot remember anything beyond the present day. Yukisuke tries to live close to her as before but the lack of collective memory starts to stagger him.
When Mio was young, she lost her parents in a great flood and also became separated from her best friend Noe. Afterwards, Mio found her talent in cooking and eventually became a cook. Meanwhile, Noe has become an oiran (high-ranking courtesan).
The park of Hatsumori, where Nanase and her friends grew, is in danger of being erased. Will it and its memories survive? Its future will be decided on a softball competition.