After his father and mother divorced, young Kai (voiced by Shoda Shimada) followed his father back to his hometown by the mountains and the sea, and started a new life with his grandfather who worked as an umbrella. The changes in the family have made Kai unhappy, and only when arranging the music can Kai find a little bit of long lost happiness. Yubu (Shoumei Caizi)
After his father and mother divorced, young Kai (voiced by Shoda Shimada) followed his father back to his hometown by the mountains and the sea, and started a new life with his grandfather who worked as an umbrella. The changes in the family have made Kai unhappy, and only when arranging the music can Kai find a little bit of long lost happiness. Yubu (Shoumei Caizi)