Natsuko is a happy child. Thanks to her father, who works for the dairy industry, she lives far from misery. But when one day, on a trip to Hokkaido, she crosses paths with a mysterious young girl in the mist, she may well discover some family secrets of which she knew nothing. What impact will this encounter have on her life? What tragedies have turned her mother's past upside down? As the months go by, Natsuko will have to grow up much faster than she expected...

(Source: Akata, translated)