The manga received an Award of Excellence at the 38th Japan Cartoonist Association Awards and the 13th Japan Media Arts Festival Award in the manga division, and was nominated for the 12th and 13th Tezuka Osamu Cultural Prize.

One summer vacation, Ruka meets two boys, "Umi" and "Sora," whose upbringing contains strange and wonderful secrets. Drawn to their beautiful swimming, almost more like flying, Ruka and the adults who know them are intertwined in a complex mesh...

Meanwhile, an unexplained anomaly is occurring all over the world: fish are disappearing. Thus begins a marine adventure of boys and girls to captivate all the senses!

Type: Movie
Episodes: 1
Status: Not yet aired
Aired: Jun 7, 2019
Producers: None found, add some
Licensors: None found, add some
Studios: Studio 4°C
Source: Manga
Genres: Mystery, Supernatural, Drama, Seinen
Duration: Unknown
Rating: None

Director: Ayumu Watanabe (Gyakuten Saiban: Sono "Shinjitsu", Igi Ari! series)
Music: Joe Hisashi (Kaze Tachinu)
Character Design, Chief Animation Director, Direction: Kenichi Konishi (Kaguya-hime no Monogatari)
Art Director: Shinji Kimura (Ao no Exorcist Movie)
CGI Director: Kenichirou Akimoto (Harmony 3DCG modeling chief)
Color Design: Miyuki Itou (Haru wa Kuru)
Sound Director: Kouji Kasamatsu (Karigurashi no Arrietty)
Producer: Eiko Tanaka (Majo no Takkyuubin)
Production: Kaijuu no Kodomo Production Committee
Distribution: TOHO animation

Ruka Yasuumi: Mana Ashida (Jewelpet Movie: Sweets Dance Princess)
Umi: Hiiro Ishibashi (Remember Me (Coco Japanese dub))
Sora: Airu Kubozuka (Nakimushi Shottan no Kiseki movie)

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