The film was written and directed by Keiichi Hara based on the novel by Masao Kogure.
The film is now getting some new streaming distribution with it arriving on the Tubi service here.
Plot Concept: From acclaimed director Keiichi Hara (Miss Hokusai, Colorful ), one of Japan’s leading animation talents, comes a heartwarming summer adventure.
The Japanese cast includes Kazato Tomizawa as Coo, Takahiro Yokokawa as Kôichi Uehara, Naoki Tanaka as Yasuo Uehara, Naomi Nishida as Yukaki Uehara, and Tamaki Matsumoto as Hitomi Uehara.