Fairy Tail and Ryouzanpaku, Assemble!

Basically, Kenichi reads about these alternate universes and when a portal from another universe throws some Fairy Tail mages into the world of Martial Arts, all of Akisame's teachings on the laws of physics get turned on their head as all hell breaks loose. Fairy Tail joins in the fight against Yami, oh my. Magic, battles and a very confused disciple. Rated K , some bad language.