Ep. 14: Five years later, a frozen sea and winter prevail as Chisaki visits Isamu and reunites with Akari and Akira.

Five years after the events, the waters around Shioshishio are frozen, bringing perpetual winter. Chisaki visits Isamu in the hospital before reuniting with Akari and her son, Akira. They recall how Miuna supported Akari during her pregnancy worries regarding Hikari. At school, students learn of an upcoming Tomoebi and plan a shore party. Sayu warns Miuna that a classmate intends to confess during the event. Chisaki, previously rejected by his family, now lives with Isamu until the elder is hospitalized. Tsumugu leaves to study oceanography, investigating sea village climate links. During the Tomoebi, Miuna declines a confession, citing another interest. A strange light appears, and Tsumugu, studying with his teacher, encounters Miuna at the site. There, they discover Hikari, who has not aged since their last meeting.
Episodes
- Ep. 10 · Hikari seeks to stop the freezing saltflake snow by performing the Ofunehiki ritual.
- Ep. 11 · The Changing Times
- Ep. 12 · Tsumugu meets his mother while Hikari confesses to Manaka during wedding preparations.
- Ep. 13 · Manaka offers herself to save Akari during the Ofunehiki ceremony
- Ep. 14 · Five years later, a frozen sea and winter prevail as Chisaki visits Isamu and reunites with Akari and Akira.
- Ep. 15 · Hikari and Chisaki finally reunite after a long separation in Shioshishio
- Ep. 16 · Hikari rescues Miuna after she falls into water during a conflict with Sayu
- Ep. 17 · Kaname reunites with friends while Sayu overcomes rejection and the group plans a sea village return.
- Ep. 18 · Miuna Finds Manaka in the Trench as Shioshishio Collapses