Ruka is a young girl whose parents are separated and whose father works in an aquarium. When two boys, Umi and Sora, who were raised in the sea by dugongs, are brought to the aquarium, Ruka feels drawn to them … Mana Ashida, Hiiro Ishibashi, Seishu Uragami, Win Morisaki, Goro Inagaki, Yu Aoi, Tohru Watanabe Added on Amazon Prime 2023-07-25. Youtube Trailer