in this au, Nico is a dark fairy, will is a light fairy (and a healer fairy), Percy is a water fairy, annebeth is a book fairy, Jason is a lighting fairy, Piper is a love fairy, hazel is a crystal fairy, leo is a fire fairy, frank is a shape shifting fairy? (I dunno ok?), thaila is a lighting fairy, and Reyna is a warrior fairy?, Ok anyway, just start the story anywhere in the fairy tree, (the fairy tree is home to all kinds of different fairys everybody is a fairy in this au)