Welcome to DiaperedAnime, Mistress or Maid~! I'm glad to hear that you've enjoyed and still enjoy reading the various Three Words games. Perhaps you could help to continue any of the stories by joining in on the fun! To answer your question, no I am not familiar with the Fairy Tail (See ->
https://en.wikipedia.org/wiki/Fairy_Tail) franchise. However, if you want to create a Three Words game based on Fairy Tail, there's nothing to stop you from doing so. I'd ask around first to see whether there are some peeps here who would be interested in Fairy Tail before doing so, to ensure that peeps will participate in the fun and read the story as well~! I'd join you if you create the game but if no one else joins, it'd only be the two of us playing.