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.
EPISODE 1
In Between the Sea and the Land
Because their Hamaji Junior High School under the sea is closing, Umimura residents Sakishima Hikari, Mukaido Manaka, Hiradaira Chisaki, and Isaki Kaname are transferring to Mihama Junior High on the surface.
EPISODE 2
The Chilly Desert
Manaka ends up with a fish face on her knee from Uroko-sama's curse; Hikari grows annoyed that Manaka and Tsumugu are talking.
EPISODE 3
The Tradition of the Sea
Akari is scolded by her father for disobeying the rules of Umimura; Tsumugu's grandfather explains that people from Umimura aren't allowed to marry anyone from the surface, as their children won't survive underwater.
EPISODE 4
Because We're Friends
Hikari learns that Akari's boyfriend is the father of the girl who's been fighting him, who asks him to help break them up. The next day, they take a cooking class with Umimura kids.
EPISODE 5
Hey, Sea Slug
Akari tells Uroko-sama and her father how she feels about Itaru, and begins to smile again. Hikari sees this and feels a little better.
EPISODE 6
Beyond Tomoebi
The students gather for swimming class. The sea kids are adjusting to school on land and are getting along with the other kids.
Chris Hackney
Xanthe Huynh
Erica Mendez
Bryce Papenbrook
Michelle Ruff
Sarah Anne Williams
Natsuki Hanae
Kana Hanazawa
Ai Kayano
Ryōta Ōsaka
Kaito Ishikawa
