The staff of Grand Blue Dreaming Season 3 confirmed the anime’s July 6 premiere for Tokyo MX and BS11’s 24:00 JST timeslot, which is effectively July 7 at 12:00 a.m. JST. A new promotional video was also released, previewing the opening theme song “Natsuko” by FUNKY MONKEY BΛBY’S and the new ending theme song “Hadaka no Mermaid” (Naked Mermaid) by girl group MAMESHiBA NO TAiGUN.
The story of Grand Blue Dreaming Season 3 takes place in Palau, the anime’s first setting outside Japan.
New cast members of Grand Blue Dreaming Season 3 include:
- Sayaka Ōhara as Sayaka Kotegawa
- Asami Seto as Chief
- Aya Suzaki as Maki
- M.A.O as Karina
Grand Blue Dreaming Season 2 premiered on July 7, 2025 on Tokyo MX and BS11 channels, and Crunchyroll is streaming the series.
Zero-G animated Grand Blue Dreaming Season 2, and Liber aided in production. Further, Shinji Takamatsu returned as director/scriptwriter/sound director, Yōichi Ueda served as animation director alongside character designer Hideoki Kusama, Aiko Matsuyama was the color key artist, and Saber Links was the second season’s sound production studio.
As previously revealed, Shōnan no Kaze and Atarashii Gakkō! perform the Grand Blue Dreaming Season 2 opening theme song “Seishun Towa.” SEAMO performs the ending theme song “Hadaka de Dotsukiai feat. May’n.”
The cast includes:
- Yōma Uchida as Iori Kitahara
- Ryōhei Kimura as Kohei Imamura
- Hiroki Yasumoto as Shinji Tokita
- Katsuyuki Konishi as Ryūjiro Kotobuki
- Chika Anzai as Chisa Kotegawa
- Maaya Uchida as Nanaka Kotegawa
- Toa Yukinari as Azusa Hamaoka
- Kana Asumi as Aina Yoshiwara
- Takuya Eguchi as Hajime Nojima
- Junya Enoki as Shinichirō Yamamoto
- Natsuki Hanae as Yū Mitarai
- Robert Waterman as Kenta Fujiwara
- Jun Fukuyama as Captain Kudō
- Shinji Kawada as Toshio Kotegawa
- Nana Mizuki as Kaya Mizuki
- Aya Yamane as Sakurako Busujima
- Sumire Morohoshi as Shiori Kitahara
- Yoshino Aoyama as Naomi Otoya
Finally, here’s an overview of the manga, via Kodansha USA :
After moving out on his own to a seaside town, Iori Kitahara makes a college debut he never anticipated. A new chapter of his life unfolds, full of diving with beautiful girls and shenanigans with a gaggle of lovable bastards! Idiot-expert Kenji Inoue and au naturel authority Kimitake Yoshioka bring you a glorious college tale filled with booze-fueled antics!
