In the snowy region of Hokkaido at the end of the 1970s (the nearest "urban" is Asahikawa City), the third-year junior high school student who grew up as the eldest son of the Yamakawa family, had the excellent performance of the mock exam , ranked first in Hokkaido and 5th in the whole country, and he was the one who shouldered the expectations of the people around him.

However, his father, Hirahara, the main pillar of the family, was hospitalized in a workplace accident, and Daichi decided not to go to high school and to support the family as the eldest son. His determination spreads ripples around him, but more bad luck hits the Yamakawa family.

This is a story that questions the independence of a boy and the bonds of his family. (from ja.wikipedia)