Nagi no Asukara Season 1 Episode 15

The Protector of Smiles

Chisaki learns of Hikari's return but refrains from meeting him. Meanwhile, Hikari is still recovering from his hibernation when he meets some of his old friends and the fishermen association presents him with the same flag he used during the Ofunehiki. Still refusing to meet Hikari, Chisaki confesses to Tsumugu that she is afraid of how Hikari will react upon seeing her. However, Hikari dives into the sea and attempts to return to Shioshishio but the sea currents drive him away. Before he makes another attempt, Tsumugu appears and confronts him for not going to meet Chisaki and hears from him that he is too scared with how much things changed while he was asleep. While returning home, Hikari hears a song and learns that the song is played everyday for the residents of Shioshishio who are still asleep and following the sound, he encounters Chisaki and the two finally meet again.