Ep. 23: Hikari confronts Tsumugu while Miuna and Sayu navigate their own romantic confessions.

Distraught by Uroko's revelations, Hikari refuses to share the news until Miuna persuades him to gather their friends at Tsumugu's house. Kaname and Chisaki suggest Manaka's condition might not be negative, prompting Sayu to lash out. Sayu later tells Miuna she cannot accept losing her feelings for Kaname. Hikari and Miuna find Manaka with a white rock from red-bellied seaslugs, believing it grants a wish from five years ago. Hikari realizes this connects to her lost memories of love. The next day, Sayu plans to confess to Kaname. Hikari asks Tsumugu to help recover her memories, but he refuses. When Chisaki sees Hikari attacking him, she intervenes. Tsumugu reveals he loves Chisaki, who flees to the sea. Tsumugu dives after her, gaining Ena and a cursed fish that guides him to Shioshishio, where he admits he liked her before the Ofunehiki five years earlier.

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