Nagasaki,1986; a popular fifth grader and his bullied classmate have an unforgettable summer when they set out for Boomerang Island to see the dolphins. Ichiro Banka, Konosuke Harada, Machiko Ono, Pistol Takehara, Shihori Kanjiya, Tsuyoshi Kusanagi, Ryo Iwamatsu, Eri Murakawa, Momoko Fukuchi, Goriken, Mizuki Kayashima, Rintaro Hachimura, Atsushi Shinohara, Yuki Izumisawa Added on Netflix 2023-05-15.