A Demon's Luck: Sebastian x Lucy

Summary: Sebastian's contact with Ciel is broken. Undertaker grabs him and takes him to the world of Fairy Tail. They meet Lucy and the rest of Fairy Tail. Can Lucy get use to Sebastian and Undertaker? Will Lucy be Sebastian's mate or will she be Nastu's mate? Will Fairy Tail's behavior affect our favorite butler? Can Sebastian survive this guild? Main: SebLu and Underira