Reach the Sky Above
S01E18 - Airdate: 2010-02-15
Runtime: 25 min
Natsu and Erza lift the curse by aiming their attacks at the moon, destroying a magical membrane cast over the island by the Moon Drip, which turns out to be the direct cause of the curse. Furthermore, it is revealed that the curse hadn't turned the islanders into demons.
Episode details and rating from TVmaze.