Quick question have you seen/read rave master? The manga is made by the same person and are kinda similar I would suggest watching this
http://www.animefreak.tv/watch/fairy-tail-x-rave-online crossover of the two maybe even bring more Rave Master characters in as its canon that they exist in the same world . After all Fairy tail has as regular'ish crossover'ish/cameo's Rave Masters three stooges better known by the real name as''The giggle butt gang''So we got beings we could bring in from Rave Master