Season 1

April 28, 2025

The crew goes searching for keys to a treasure chest.

May 5, 2025

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

May 12, 2025

Hairi learns the story of the Higenekos.

May 19, 2025

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

May 26, 2025

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

June 2, 2025

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

June 9, 2025

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

June 16, 2025

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

June 23, 2025

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

June 30, 2025

Ao continues her search for the butterfly she seeks.

July 7, 2025

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

July 14, 2025

Hairi meets a lone girl on the island.

July 21, 2025

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

July 28, 2025

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

August 4, 2025

Hairi tries to grant Umi's wish.

August 11, 2025

Umi's true hopes for summer vacation are revealed.

August 18, 2025

The day of the ritual draws near.

August 25, 2025

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

September 1, 2025

Time moves on after summer ends.

September 8, 2025

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

September 15, 2025

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

September 22, 2025

Nanami's true identity is revealed.

September 29, 2025

Umi's story comes to an end.