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).
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.
A documentary about Japanese idol group Nogizaka46. "A method to forget sadness" will show how the Nogizaka46's members were, how they really felt, and how they strived while facing the cruel world of showbiz. How were their lives off the screen? Well, find out by yourself.
