A teaser trailer for Grand Blue Dreaming Season 3 is now out.
It was also announced that M.A.O is voicing the character Karina.
Last week saw the reveal of a teaser visual and a July 2026 broadcast premiere window, as well as the castings of Sayaka Ohara as Sayaka Kotegawa, Asami Seto as Chief (of the Palau diving shop Dolphin), and Aya Suzaki as Maki.
Grand Blue Dreaming is based on the Kodansha-published manga written by Kenji Inoue and drawn by Kimitake Yoshioka. Kodansha USA describes the manga as such:
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!
The first two seasons of the anime aired in 2018 and 2025.
The manga started serialization in Good! Afternoon in 2014 and will release its 26th volume on April 7, 2026 (JST).
Production credits (reprising unless stated otherwise)
• Director, scriptwriter, and sound director: Shinji Takamatsu
• Animation production: Zero-g
• Animation production: Saber Works (new)
Cast
• Yuma Uchida as Iori Kitahara
• Chika Anzai as Chisa Kotegawa
• Maya Uchida as Nanaka Kotegawa
• Ryohei Kimura as Kohei Imamura
• Hiroki Yasumoto as Shinji Tokita
• Katsuyuki Konishi as Ryujiro Kotobuki
• Toa Yukinari as Azusa Hamaoka
• Kana Asumi as Aina Yoshiwara
• Aya Yamane as Sakurako Busujima
