Ep. 4: Hikari refuses to help Miuna, Manaka faces rejection, and a rescue reveals a family secret.
Aired on October 24, 2013

Miuna and Sayu ask Hikari to sabotage Akari and Itaru, but he refuses due to his principles. In home economics, Manaka attempts to bond with classmates by sharing food, but they reject her, causing a mess. Sayu is the true culprit, acting out of resentment toward Hikari. Miuna scolds Sayu, and later, Hikari and Manaka save Itaru from drowning, discovering Miuna’s mother originated from Shioshishio. Akari explains to Uroko that she cared for Miuna and her father after her mother’s death but gave up due to rejection. Hikari apologizes to the boys he wrongly blamed, while Manaka supports him, leaving Chisaki feeling sidelined and sad.
Episodes
- Ep. 1 · Sea and Land Students Clash as Manaka Faces Curse and Rescue
- Ep. 2 · Manaka seeks a curse while friends witness Akari's surface romance and face village judgment.
- Ep. 3 · Hikari learns about the village's strict marriage rules and the consequences for children born with surface partners.
- Ep. 4 · Hikari refuses to help Miuna, Manaka faces rejection, and a rescue reveals a family secret.
- Ep. 5 · Chisaki confesses feelings while Akari reconciles with Miuna after a night of comfort.
- Ep. 6 · Manaka Reconciles with Chisaki During the Tomoebi Phenomenon
- Ep. 7 · Rebuilding Ofunehiki and the Reunion of Shioshishio Feuding Parties
- Ep. 8 · Hikari and friends search for a gift for Akari while Chisaki reveals feelings.