四季折の羽 (Shikiori no Hane)

Background
A crane (Rin) was rescued by a man (Len) when hunting. Grateful, the crane visited him in her human form and the two fell in love and married. But one day the man fell sick, and because they were unable to afford medicine, the crane began to weave cloth with her own feathers and sell the cloth for money.

Following the concept of its album If the World 2, the song is based on the Japanese folktale The Grateful Crane. It has reached the Hall of Fame.