Welcome to Galuna Island!

Welcome to Galuna Island! is an event taking place in the Galuna Island arc in which Team Natsu ventures in the mysterious, Galuna Island.

Prologue
Natsu Dragneel steals an S-Request from the Guild's Second Floor reserved for the S-Class Mages of Fairy Tail. Natsu and Happy go to Lucy's place and inform her that they are going to a haunted island where the job will take place. At first Lucy was hesistant however, Natsu and the exceed manage to convince Lucy to accompany them for the job by telling her that the reward is a Gate Key to one of the twelve Zodiac Celestial Spirits. Back at the Guild, Gray volunteers to bring back the Natsu and the others.

Synopsis
Arriving at Hargeon Town, the team finds out that all sailors are not willing to take them to the island. They are shortly intercepted by Gray Fullbuster, Natsu and Gray starts their usual bickering. Suddenly, a sailor agrees to take them to the mysterious island. Natsu knocks out Gray who was off-guard and takes him with them in fear of him going back and telling Erza.

Along the trip, Gray, now conscious, asks the sailor why he let them on. He introduces himself as Bobo and, reveals to them that he was once an inhabitant of the cursed island. Bobo reveals to them the demonic curse of Galuna by showing them his arm which is that of a demon's. At the island's summit, light from the moon strikes, where a sort of ritual still unknown to everyone else occurs.

When the team spots the island, Bobo suddenly disappears and a giant tidal wave washes them away. In the morning, the team find themselves on the shores of Galuna Island. They decide to start exploring the Island, with Gray now willing to participate. By nightfall, they found a gate leading to a village. To prove that they are legitimate guild Mages, they all show the guards their respective Guild marks and, are then allowed entrance.

The team is greeted by the villagers, who are wearing robes to cover their body. The village Chief, Moka begins to explain to them their problem. And to help Team Natsu to understand better, they remove their robes showing that parts of their body are demon-like;similar to Bobo's arm. Moka tells them that this plague started when the moon turned purple and that this is a curse. The skeptical mages wanted to confirm this theory and to their surprise, the moon was indeed purple.

Once the moonlight shines on the villagers, their whole bodies start transforming to that of a demon's, and the village Chief explains, its the effect of the moon's Magical Power. He adds that at dawn, they return to their human forms, but there are those that are unfortunate and lose their minds. they are left with no choice but to kill those that do; since they could kill every other villager. He reveals that he had done the same to his own son, Bobo, shocking Lucy and Gray. The villagers plead for them to stop the curse through only one crazy method - To destroy the moon!

With no definite ideas as to how to execute the request, the team sleeps the night off and heads out to explore the island the next morning. They are confronted by a gigantic mouse in a maid's outfit along the way, but Gray easily defeats it. Soon after, they discover an ancient temple and enter to investigate. When inside, Natsu accidentally destroys the floor and they discover a hidden cave underneath the temple.

Aftermath
As they explore further, they find a huge frozen demon, which Gray instantly recognizes as the Demon of Disaster, Deliora! They hear footsteps nearing, and decide to hide. From the cavern, two people emerge, discussing the Moon Drip, a strange spell.