Juugo Shounen Hyouryuuki: Kaizoku-jima DE! Daibouken

A film created after Ryuutarou Nakamura's death, inspired by Jules Verne's 1888 book Two Years' Vacation. A group of young people become stranded at sea and, following a severe storm, end up on an uninhabited island. They must adapt and cooperate to endure their situation.