When Iori Kitahara heads off to college, he decides to live at his uncle's dive shop in Izu named Grand Blue. Iori is looking forward to experiencing college life amidst the roar of the waves, the blazing sun, and his cute cousin who lives with him! However, Iori runs into a group of tough guys playing strip rock-paper-scissors, and ends up joining Peek-a-Boo, the college's diving club!
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Deep Blue | 2018-07-13 | 30 min |
| Season 1 | Episode 2 | Underwater | 2018-07-20 | 30 min |
| Season 1 | Episode 3 | A New World | 2018-07-27 | 30 min |
| Season 1 | Episode 4 | The Male Beauty Pageant | 2018-08-03 | 30 min |
| Season 1 | Episode 5 | Too Late | 2018-08-10 | 30 min |
| Season 1 | Episode 6 | First Buddy | 2018-08-17 | 30 min |
| Season 1 | Episode 7 | Doubles | 2018-08-24 | 30 min |
| Season 1 | Episode 8 | Men's Cocktails | 2018-08-31 | 30 min |
| Season 1 | Episode 9 | Shopping | 2018-09-07 | 30 min |
| Season 1 | Episode 10 | Arrival in Okinawa | 2018-09-14 | 30 min |
| Season 1 | Episode 11 | You Have the Wrong Idea | 2018-09-21 | 30 min |
| Season 1 | Episode 12 | Otori | 2018-09-28 | 30 min |
| Sound | Manual of Errors Artists | Original Music Composer |
| Art | Minoru Akiba | Art Direction |
| Camera | Hideki Imaizumi | Director of Photography |
| Editing | Masaki Utsunomiya | Editor |
| Art | Hiroshi Ogawa | Prop Designer |
| Sound | Noriko Izumo | Sound Effects |
| Production | Toshihiro Suzuki | Producer |
| Crew | Ayuko Harada | Special Effects |
| Production | Toshihiro Maeda | Producer |
| Visual Effects | Yoichi Ueda | Supervising Animation Director |
| Visual Effects | Hideoki Kusama | Supervising Animation Director |
| Visual Effects | Kimitake Yoshioka | Character Designer |
| Visual Effects | Aiko Matsuyama | Color Designer |
| Writing | Kenji Inoue | Comic Book |
| Sound | Shinji Takamatsu | Sound Director |
| Visual Effects | Hideoki Kusama | Character Designer |
| Writing | Shinji Takamatsu | Series Composition |
| Directing | Shinji Takamatsu | Series Director |
