Long ago, all humans lived beneath the sea. However, some people preferred the surface and abandoned living underwater permanently. As a consequence, they were stripped of their god-given protection called "Ena" which allowed them to breathe underwater. Over time, the rift between the denizens of the sea and of the surface widened, although contact between the two peoples still existed.
This show follows the story of Hikari Sakishima and Manaka Mukaido, along with their childhood friends Chisaki Hiradaira and Kaname Isaki, who are forced to leave the sea and attend a school on the surface. There, the group also meets Tsumugu Kihara, a fellow student and fisherman who loves the sea.
Hikari and his friends' lives are bound to change as they have to deal with the deep-seated hatred and discrimination between the people of sea and of the surface, the storms in their personal lives, as well as an impending tempest which may spell doom for all who dwell on the surface.
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Nagi-Asu: A Lull in the Sea
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Because of their Hamaji Junior High School closing, Umimura residents Sakishima Hikari, Mukaido Manaka, Hiradaira Chisaki, and Isaki Kaname are transfered to Mihama Junior High on …
S01E02
The Chilly Desert
Oct 10, 201324 min
Because of Uroko-sama's curse, Manaka ends up with a fish face on her knee. It goes away the next day, but she has some regrets because Tsumugu had said it was pretty. Meanwhile, H…
S01E03
The Legend of the Sea
Oct 17, 201324 min
Akari was rounded up by the older men of the village and Hikari and the others try to stop them. It's there that they first hear the rule that if you are seeing someone from the su…
S01E04
Because We're Friends
Oct 24, 201324 min
Hikari finds out that Akari's boyfriend is in fact the father of the girl who had been picking fights with him, Miuna. Miuna asks him to help break the two apart. The next day, the…
S01E05
Hey, Sea Slug
Oct 31, 201324 min
Akari is able to tell Uroko-sama and her father how she feels about Itaru, and is starting to smile a little again. Hikari sees that and feels a little better and heads to school. …
S01E06
Beyond Tomoebi
Nov 7, 201324 min
The students get together in their swimsuits for swimming class. The sea kids are still getting used to school on land, but are starting to get along with the other kids. The teach…
S01E07
The Ofunehiki Shakes
Nov 14, 201324 min
After school, the classmates get together in the woodshop room for the final stretch of getting the Ojoshi-sama done. After the students finish the Ojoshi-sama, even the teacher ge…
S01E08
Beyond the Wavering Feelings
Nov 21, 201324 min
Akari decides once and for all that she is going to live on the surface, and Hikari also leaves the house because he feels that Akari isn't being treated fairly.
S01E09
Unknown Warmth
Nov 28, 201324 min
Miuna makes a snow sea slug out of the saltflake snow that had fallen on the surface. Meanwhile, Hikari thinks about how his father is doing alone in the sea. In the sea, Uroko-sam…
S01E10
The Saltflake Snow Falls and Falls
Dec 5, 201324 min
Uroko-sama tells everyone that the Sea God's powers have become much smaller than they used to be, and that the saltflake snow will continue to fall both in the sea and on the surf…
S01E11
The Changing Times
⭐ 8.0
Dec 12, 201324 min
Kaname suddenly confesses his feelings to Chisaki in front of her parents, and Chisaki doesn't know what to do. Hikari and Manaka do their best to go on with the Ofunehiki, hearing…
S01E12
I Want to be Kind
Dec 19, 201324 min
Akari makes the decision to take Ojoshi-sama's place in the Ofunehiki and head into to marriage with Itaru like she was headed toward the Sea God. That was when the preparations to…
S01E13
Unreachable Fingertips
⭐ 8.0
Dec 26, 201324 min
Hikari thinks of Manaka while he's at home, and decides to tell her how he really feels about her. Manaka also tries to tell him something, but then tells him that she'll tell him …
S01E14
The Promised Day
Jan 9, 201424 min
Five years has passed since the Ofunehiki and Shioshishio's hibernation. Without knowing how Hikari or Manaka or any of the others are doing, now a 19 year old Chisaki goes to visi…
S01E15
The Protector of Smiles
⭐ 8.0
Jan 16, 201424 min
The day of the Tomoebi, a Hikari who hasn't aged from five years ago, appears in front of Miuna and Tsumugu. He has no memory of what happened since the Ofunehiki, but seems health…
S01E16
The Whispers of the Faraway Waves
Jan 23, 201424 min
Hikari starts back at Hama Junior High and is in the same class as Miuna and Sayu. He fits right in instantly, making the class laugh and has his old teacher back. But Miuna and Sa…
S01E17
The Sick Two
Jan 30, 201424 min
Akari tells Hikari and Miuna that she was just informed that Kaname has woken up from his hibernation. They all hurry down to the Fishery Cooperative and find that just like Hikari…
S01E18
Shioshishio
Feb 6, 201424 min
With Mihashi's lead on how to get into Shioshishio, Hikari, Kaname and Miuna go to investigate. They follow the sound of sand flowing that Miuna keeps hearing and land in Shioshish…
S01E19
The Lost, Lost Little...
Feb 13, 201424 min
Hikari and the others find Manaka asleep within the graveyard of Ojoshisamas. They manage to bring Manaka, who is losing her Ena, safely to the surface and to the Shiodome househol…
S01E20
Sleeping Beauty
Feb 20, 201424 min
After finding Manaka in the graveyard of Ojoshisamas, Hikari and the others bring her back up to the surface. They think that she will wake up soon just like Hikari and Kaname did,…
S01E21
The Messenger from the Bottom of the Sea
Feb 27, 201424 min
While Hikari and Miuna are arguing, Manaka suddenly wakes up. Hikari and Miuna are obviously surprised, but Manaka acts like nothing has changed is all smiles. Other than not knowi…
S01E22
Something Lost
Mar 6, 201424 min
Tsumugu talks about Uroko-sama and ends up with the curse fish on his arm. This makes Hikari and the others realize that Uroko-sama is not in the sea, but on land. To find out what…
S01E23
Who Do These Feelings Belong To?
Mar 13, 201424 min
Uroko-sama tells Hikari and Miuna that Manaka has lost the heart to fall in love with anyone. Hikari tries desperately to find a way to turn Manaka back to normal, and has a hard t…
S01E24
Detritus
Mar 20, 201424 min
Tsumugu dives into the sea after Chisaki. He starts having trouble breathing and is about to lose consciousness, but then suddenly gains Ena. Tsumugu finally catches up to Chisaki …
S01E25
Love Is Like the Sea
Mar 27, 201424 min
To stall the saltflake snow and try to get Manaka's feelings back, Hikari and the others decide to do another Ofunehiki. The day before the festival, after hearing that the red sea…
S01E26
The Color of the Sea. The Color of the Earth. The Color of the Wind. The Color of Your Heart. Your Color. Earth Color of a Calm
Apr 3, 201424 min
In order to save Manaka, Miuna is swallowed up by the whirpool that Ojoshi-sama made and is covered in Ena that wraps around her like a cocoon. Hikari and Tsumugu go to save her bu…