Hello. This is the first ever crossover story I've ever written and I am not sure about the update schedule so bear with me. Please enjoy. This first chapter is going to be the prologue so please like and comment if you like the idea. Also I don't own Fairy Tail or Assassination classroom. Enjoy!

(Takes place after the end of assassination classroom and when team Natsu returns from the tower of heaven)

Warning the characters might sound OOC

Prologue:

Nagisa's POV:

It's been exactly one year since Korosensei's death. Class 3-E decided to go visit his grave up by our old classroom on the mountain to honor him.

I had just successfully evaded Rio who was trying to make me wear a skirt for old times sakes. I decided to take a different path through the woods to get to the top so I could avoid Rio for as long as possible. Suddenly, a twig snapped behind me.

I carefully ducked behind a tree and peered out carefully. I sighed in relief as I saw a familiar red head. I ducked around the tree and started walking towards him. "Hey Karma," I called as I approached him. He turned to me and had a devious smile. "Hey Nagisa," he called. I smiled and we started walking. We started walking through the woods while Karma was going on about his most recent test, where he got a better score then Asano, which he was especially smug about. I looked over at him and he was still wearing his school uniform, along with an oversized backpack.

"Hey Karma what's in your backpack?" I asked him my voice laced with concern. It's Karma so he could have who knows what in his bag.

"Oh it's just something I have planned for the big oaf, I haven't seen him in a year so I had to plan something big," he replied defensively. I snorted.

"Karma," I repeated again slowly. "What's in your backpack". He turned to look at me and he smirked. Then he bolted.

I chased after him leaping over rocks and crossing the river with ease. After having to climb this mountain for all of last year, I know all of the ins and outs. We finally reached the top not even out of breath. Karasuma and Irina were waiting for us at the top.

"What took you so long, even Irina was able to climb the mountain faster then you," Karasuma said.

Professor swatted him over the head with her purse. "Come on, everyone's already up their" Professor Bitch said.

The four of us began to walk over to were Korosensei's grave is. "Soooo, it seems your on a first name basis, have you guys tied the knot yet," Karma asked with a smirk.

"We haven't gotten married yet but we are engag-ah". Karasuma disappeared in front of them.

"What the hell just happen-eek". Then Professor Bitch vanished.

Suddenly I felt strange. I felt a little woozy and everything was becoming super bright. I shut my eyes and when I opened them again, I was standing on a hill overlooking a town. The town looked pretty simple and medieval but their was one building that stood out. It was a strange castle looking building that had a red roof and green accents. There was a strange symbol on the front. I looked around and saw Bitch-Sensei, Karasuma and Karma standing around.

Bitch-Sensei asked where are we and I said the only possible response.

"In another world".

Natsu POV:

We were finally making our way home after the tower of heaven. We had to take the train for some absurd reason so Erza knocked me out. When we arrived at the guild hall we went to go check in with master. When we walked through the doors we saw four unfamiliar faces talking to Mira. Erza marched right up to them and spoke her voice loud and bold, "Who are you". Mira turned to face them and smiled.

"Oh hello you guys, these are Nagisa, Karma, Irina and Karasuma they're new guildmembers".