Episode Title:
Shioshishio.
Episode Description:
By following the sounds, Miuna leads Hikari and Kaname back to Shioshishio, which is now covered in snow and its residents still asleep. 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. While waiting for them to return, Miuna again hears the sound and is guided to the sea children's old school, where she sees glimpses of how Hikari and the others' days there used to be. Soon after, Uroko-sama appears before her, questioning Miuna about what she is really looking for. Hikari and Kaname find Miuna after Uroko-sama disappears. Miuna then hears the sound again and they follow it to a secret, unknown trench where all the previous Ojoshis are deposited, and where they find Manaka still asleep. Miuna realizes that the sound is coming from Manaka's ena, which is coming off. Realizing that she is at risk of dying from the loss of her ena, Hikari decides to take her to the surface. The trench collapses as the three leave Shioshishio taking the unconscious Manaka with them.
