Episode 21

The Town of Promises (約束の街) is the twenty-first episode of Granblue Fantasy: The Animation.

Plot
Gran and the crew arrive at Golonzo Island, known as the mecca of shipbuilding, in order to repair the damaged Grandcypher.

To their surprise, despite the astronomical price tag, no contracts are signed with the shipbuilders. The crew learns there is a special power on the island that enforces promises, whether they are written or verbal.

While their ship is being restored, Gran and the others decide to take on work from Sierokarte to raise funds for the repairs. Rackam stays behind to watch the ship when, suddenly, a young boy appears in front of him.