On screen
Cast
37 credited performers
Haruka Aoki
Chiikawa (voice)
Makoto Tanaka
Hachiware (voice)
Ari Ozawa
Usagi (voice)
Yuka Iguchi
Momonga (voice)
Takayuki Asai
Kurimanju (voice)
Yuma Uchida
Rakko (voice)
Miyuri Shimabukuro
Shisa (voice)
Momo Harumi
Furuhonya (voice)
Tsuguo Mogami
Shimajiro (voice)
Minori Suzuki
Siren (voice)
Momoka Terasawa
Hitoha (voice)
Sayumi Suzushiro
Futaba (voice)
Saeko Oki
Mermaid (voice)
Ayaka Nanase
Mermaid (voice)
Nozomi Nagumi
Mermaid (voice)
Chihiro Kawakami
Representative of the Islanders (voice)
Misato Matsuoka
Miso-pickled Islander (voice)
Nina Hanamiya
Miso-pickled Islander (voice)
Natsuno Kinose
Friendly 'bird' (voice)
Rinka Ishikawa
Gray Children / Islanders (voice)
Akina Houmoto
Gray Children / Islanders (voice)
Shu Uchida
Gray Children / Islanders (voice)
Izumi Umemoto
Gray Children / Islanders (voice)
Nanami Kusakari
Gray Children / Islanders (voice)
Akane Kumada
Gray Children / Islanders (voice)
Reika Koyama
Gray Children / Islanders (voice)
Riko Sakuraya
Gray Children / Islanders (voice)
Yûka Suzumi
Gray Children / Islanders (voice)
Nina Tamaki
Gray Children / Islanders (voice)
Reina Nagao
Gray Children / Islanders (voice)
Momo Hisaki
Gray Children / Islanders (voice)
Yurika Moriyama
Gray Children / Islanders (voice)
Asaki Yuikawa
Gray Children / Islanders (voice)
Moeko Yuki
Gray Children / Islanders (voice)
Tomokazu Sugita
Pochette Yoroi-san (voice)
Yoshitsugu Matsuoka
Ramen no Yoroi-San (voice)
Hiroki Touchi
Rōdō no Yoroi-san (voice)