The boy with the broken wings begins to settle into life on a tropical island.

A mysterious chest is uncovered in the attic of a school.

The crew goes searching for keys to a treasure chest.

Hairi travels across the island in search of a pirate ship.

Hairi learns the story of the Higenekos.

Hairi meets a girl sitting on a lighthouse. She is trying to find out what she wants to do.

Tsumugi decides to make a balcony on the lighthouse out of the empty Paringles cans she's been collecting.

Hairi and Shizuku look for Tsumugi, but Hairi ends up lost himself.

Hairi gives Tsumugi a summer break she'll never forget.

Hairi starts over at the island and meets a new girl.

Hairi ignores Ao's warning not to come back into the mountain at night. As it turns out, it was for good reason.

Ao continues her search for the butterfly she seeks.

Ao and Ai have a lot of catching up to do.

Hairi meets a lone girl on the island.

Hairi visits the main island and talks a little about his past.

Hairi and Shiroha need to make arrangements to prepare for the upcoming ritual. Shiroha's visions become clearer.

Hairi tries to grant Umi's wish.

Umi's true hopes for summer vacation are revealed.

The day of the ritual draws near.

As summer draws to a close, Hairi begins to forget.

Time moves on after summer ends.

Nanami wakes up on the island with no memory of how she got there.

Nanami is invited to make lanterns with Shiroha and her classmates for the Natsudori ritual.

Nanami's true identity is revealed.

Umi's story comes to an end.