Ep. 18: Miuna Finds Manaka in the Trench as Shioshishio Collapses
Aired on February 6, 2014

The group reaches the snowy, silent Shioshishio, where Hikari and Kaname depart to visit their homes. Miuna follows a mysterious sound to the sea children's old school, witnessing past memories of Hikari and the others. Uroko appears to question Miuna's desire to find Manaka before disappearing when the boys arrive. Miuna hears the sound again, leading the trio to a secret trench where previous Ojoshis are kept. There, they locate an unconscious Manaka. Miuna discovers the sound originates from Manaka's detaching Ena, which threatens her life. Hikari decides to take her to the surface. As they escape with the unconscious Manaka, the entire location collapses behind them.
Episodes
- 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
- Ep. 19 · Chisaki learns a new legend while Manaka remains asleep and Hikari seeks answers.
- Ep. 20 · Hikari searches for Uroko while Miuna questions her feelings and Manaka wakes up
- Ep. 21 · Manaka wakes without Ena while Miuna struggles with breathing issues and Tsumugu reveals a fishhead curse.
- Ep. 22 · Hikari searches for Uroko while temperatures drop and Manaka's lost memories complicate his feelings.