Volume 1
Due to the closure of their middle school, four students from the sea, Manaka Mukaido, Hikari Sakishima, Chisaki Hiradaira, and Kaname Isaki must attend middle school on the land, despite the growing tension between the land and sea people. While getting used to their new lives, these four and their new friend from the land, Tsumugu Kihara, plan to put on an Ofunehiki, a festival traditionally organized by the land and the sea people, in an attempt to create peace between the two villages.Volume 2
Five years have passed since the Ofunehiki and Shishishio's hibernation. Itaru and Akari now have a son, Akira. Sayu and Miuna, now 14, attend Mihama Middle School. All the while, Chisaki continues to worry about the whereabouts of Hikari and the others while living with Tsumugu and his grandfather. One day, an unexpected discovery leads everyone to revisit the events of the Ofunehiki and unlock the mysteries lying deep beneath the sea...
Complete Premium Edition (Blu-ray)
- Release date: June 30, 2015
- Genre: Romantic Drama, Fantasy
- Age rating: Teen
- Media: 3 Blu-ray disc set
- Total of 26 episodes
- Runtime: 615 minutes
- English voice acting, original Japanese voice acting with English subtitles
(subtitles for Japanese audio Blu-ray discs cannot be turned off) - Bonus content: Clean openings and endings, and original Japanese trailers
- Premium box with two disc original soundtrack (Disc 1: 31 songs, Disc 2: 29 songs), and a full-color, approx. 76-page hardcover art book, complete with character info, episode guide, text commentary, prop designs, and full-color background art and art settings
*This product is for sale and use on playback units only within licensed territories. It is not intended to function in any other region.
Volume 1 Standard Edition (DVD)
- Release date: July 14, 2015
- Genre: Romantic Drama, Fantasy
- Age rating: Teen
- Media: 2 DVD disc set
- Total of 13 episodes
- Runtime: 308 minutes
- English voice acting, original Japanese voice acting with English subtitles
- Bonus content: Episode 14 - The Promised Day, clean opening and ending, and original Japanese trailers
- Episode guide leaflet
*This product is for sale and use on playback units only within licensed territories. It is not intended to function in any other region.
Volume 2 Standard Edition (DVD)
- Release date: July 14, 2015
- Genre: Romantic Drama, Fantasy
- Age rating: Teen
- Media: 2 DVD disc set
- Total of 13 episodes
- Runtime: 307 minutes
- English voice acting, original Japanese voice acting with English subtitles
- Bonus content: Clean openings and endings
- Episode guide leaflet
*This product is for sale and use on playback units only within licensed territories. It is not intended to function in any other region.
Hikari Sakishima
Hikari lives with his sister Akari, who works for a supermarket on the land, and his father Tomoru, who is the chief priest of the Sea Village. He has a strong sense of justice and is very caring, but he has a tendency to use harsh words. He loses his temper when it comes to problems involving his childhood friends. He is a good cook.
Manaka Mukaido
She's a huge klutz and can be really indecisive at times, but she has a very strong sense of right and wrong like Hikari. She gives 100% for anything and everything. This sometimes backfires because she doesn't consider the consequences, which causes trouble for those around her.
Chisaki Hiradaira
She is childhood friends with Hikari and the other children from the sea, but she's more of the older sister type. Even though she's reserved at first, she's good at becoming friends with people over time. She's very shy when it comes to love.
Kaname Isaki
Contrary to Hikari's outgoing personality, Kaname is more calm and reserved. He takes in his surroundings before acting. He's cute and cool looking, but there's something feminine about him.
Tsumugu Kihara
An 8th grader who lives with his grandfather, Isamu, on the land. He helps his grandfather with fishing. He's calm, mysterious, and doesn't let anyone affect him too much. He is very interested in the sea and is curious about Hikari and friends.
Miuna Shiodome
A 3rd grader who lives on the land. She lost her mother when she was young and currently lives with her father. She's not necessarily shy, but she is calm and mature for an elementary schooler.
Sayu Hisanuma
Miuna's classmate and best friend. She's got a strong personality, despite being bullied in the past. She always tries to get in Hikari's way. She has a tendency to use advanced words for an elementary schooler.
Lord Uroko
The guardian of Shioshishio. He looks young, but talks like a seasoned old man. He enjoys watching people he's cursed. Sometimes he will unexpectedly give good advice. After putting everyone in Shioshishio in hibernation, he goes missing.
| Staff | Original Story | Project-118 |
| Director | Toshiya Shinohara | |
| Series Composition | Mari Okada | |
| Original Character Design | Buriki | |
| Character Design / Animation Supervision | Yuriko Ishii | |
| Key Animator | Hideki Takahashi | |
| Art Director | Kazuki Higashiji | |
| Art Setting | Yoshinori Shiozawa | |
| Director of Photography | Yukiyo Kajihara | |
| Color Design | Mika Sugawara | |
| 3D Director | Yohei Hirata | |
| Special Effects | Masahiro Murakami | |
| Editor | Ayumu Takahashi | |
| Music | Yoshiaki Dewa | |
| Music Production | GENEON UNIVERSAL | |
| Sound Director | Jin Aketagawa | |
| Sound Production | Magic Capsule Co., Ltd. | |
| Produced by | Infinite | |
| Animation Production | P.A.WORKS | |
| Production | Nagi-Asu Production Committee | |
| Opening and Ending Themes | Opening Theme 1 | Ray lull ~soshite bokura wa~ (lull~And Then We~) |
| Ending Theme 1 | yanaginagi akuaterariumu (Aqua Terrarium) | |
| Opening Theme 2 | Ray ebb and flow | |
| Ending Theme 2 | yanaginagi mitsuba no musubime (Where the Mitsuba is Tied) | |
| Japanese Cast | Hikari Sakishima | Natsuki Hanae |
| Manaka Mukaido | Kana Hanazawa | |
| Chisaki Hiradaira | Ai Kayano | |
| Kaname Isaki | Ryota Osaka | |
| Tsumugu Kihara | Kaito Ishikawa | |
| Miuna Shiodome | Mikako Komatsu | |
| Sayu Hisanuma | Kaori Ishihara | |
| Akari Sakishima | Kaori Nazuka | |
| Tomoru Sakishima | Masuo Amada | |
| Itaru Shiodome | Junji Majima | |
| Isamu Kihara | Motomu Kiyokawa | |
| Lord Uroko | Kosuke Toriumi | |
| English Cast | Hikari Sakishima | Max Mittelman |
| Manaka Mukaido | Michelle Ruff | |
| Chisaki Hiradaira | Brianna Knickerbrocker | |
| Kaname Isaki | Bryce Papenbrook | |
| Tsumugu Kihara | Chris Hackney | |
| Miuna Shiodome | Xanthe Huynh | |
| Sayu Hisanuma | Sarah Anne Williams | |
| Akari Sakishima | Erica Mendez | |
| Tomoru Sakishima | Richard Epcar | |
| Itaru Shiodome | Grant Gorge | |
| Isamu Kihara | Steve Mann | |
| Lord Uroko | Chris Niosi |
