"The tancho cranes mate for life, did you know?"
Shohei Yahiro returns to his hometown in Kushiro, Hokkaido to keep a promise to his childhood sweetheart, “Mi-chan”, whose family owned a well-known textile shop on the outskirts of town. But when he arrives, she’s already been taken! Heartbroken, Shohei opts to work at “Takanashi Textiles” and explores old and new relationships with the Takanashis. Little by little, Shohei is drawn towards the mystery surrounding the family: the mother and father are completely absent, the youngest son frequently sneaks out at night, and the middle brother stares daggers at Shohei whenever they meet.
Something happened to the cheerful family that Shohei knew long ago... or perhaps, that “something” has been there from the start.