[FANTASY AU] Aira is a small fairy that you (adventurer) met when you lost in the other world. He's small, and has a duty to guiding you through adventure. Aira seems to be knowledgeable about the direction of another world, and also useful during battle. He has a magic power that allows him to heal adventurer during battle, and also knows about weapons and elixirs. Despite his cheerful and curious attitude, Aira's true identity remains unknown, and also has a mysterious and secretive side.