第 13 集: 御船曳祭典中，真夏為拯救明里而獻身

After a brief talk with Tsumugu, Manaka returns home and meets Hikari. In the occasion, Hikari reaffirms his feelings for her and she claims that have something important to tell him after the Ofunehiki. On the day of the ceremony, the rest of Shioshihsio is about to hibernate when Hikari and his friends help in the fishermen take Akari to the sea god as planned when Uroko lights the way for them. Suddenly, the boats are surrounded by whirlpools and both Akari and Tsumugu fall at the sea and are pulled down. While Chisaki and Kaname dive to rescue Tsumugu, Manaka rescues Akari and decides to offer herself instead. Hikari rescues his sister but fails to save Manaka as well. Meanwhile the boat carrying Kaname, Chisaki and Tsumugu makes a fast maneuver to avoid a pillar falling onto them, but Kaname falls in the ocean and his fate is uncertain, while a strange barrier covers the entire Shioshishio. (Source: Wikipedia)

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