Despite being a wolf, Momo grows up playing with a sheep named Kiku. Their carefree days abruptly end when Kiku moves away from Momo. Before leaving, Kiku promises to feed Momo high-grade mutton when they are older. Years later, Momo receives
a letter from Kiku inviting him to Kiku's new store. What feast does Kiku have prepared for Momo?