After a brief talk with Tsumugu, Manaka returns home and meets Hikari. In the occasion, Hikari reaffirms his feelings for her and she claims that have something important to tell him after the Ofunehiki.
By following Miuna's directions, the three finally arrive at Shioshishio. Anxious about meeting Manaka once more, Hikari decides to return home and pay a visit to his father first, while Kaname leaves to check on his house as well.
Five years later, the sea over Shioshishio is frozen and the surface enters into a continued winter. Chisaki pays a visit to Tsumugu's grandfather Isamu at the hospital before returning to meet Akari and her son, Akira.
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 the surface.
Manaka ends up with a fish face on her knee because of Uroko-sama's curse. Meanwhile, Hikari gets annoyed that Manaka and Tsumugu are talking and tells him to not concern himself with the people of Umimura.
The older men of the village rounded up Akari and Hikari and the others try to stop them. They learn about the rule that if you are seeing someone from the surface, you will be banished from the village.
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. While on their way to school, Chisaki is late and walking on her own.
After school, the classmates gather for the final stretch finishing the Ojoshi-sama. After completing the Ojoshi-sama, they wonder if it's possible to somehow do an actual Ofunehiki like they used to do with the surface and the sea working together.
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 try to re-enact the first Ofunehiki went back under way.
Hikari finds out that Akari's boyfriend is the father of the girl who had been fighting him, Miuna. Miuna asks him to help break them up. The next day, they are in a cooking class with Umimura kids. Manaka encourages the kids to try the food they cooked.