This is my first crossover, so don't judge.
Fairy Tail + Assassination Classroom
The job seemed easy enough. Natsu picked a job off the board, drawn in by the great sum of money written at the bottom.
"30 billion jewel?! If we got that kind of money, we'd be so rich! We'd never have to take another job again!" Natsu yelled excitedly. He had been hovering around Lucy, Erza, Gray and Wendy all day, trying to convince them to accompany him on his mission.
"Natsu, have you even read what we have to do on this mission?!" Lucy asked, confused.
Natsu shaked his head and glanced down at the flyer nervously.
"Uh… we have to go to a Kunugigaoka Junior High School and…" he paused.
"Am I reading this right?!" Natsu wondered out loud. Lucy snatched the paper away.
"Lemme see!" She frowned, shocked. "What?! The job is to help Junior High students assassinate their teacher before March 13?!"
"That doesn't sound like my kind of job…" Wendy admitted. By now, everyone had passed the paper around, and Erza was looking at it now, with stars illuminating her eyes.
"Wow! We'd get to teach the students any subject we wanted to! I've always dreamed of being a teacher! I'm in!" Erza squealed.
Lucy sighed, giving a nervous glance to Wendy.
"Well, I guess I'll go too. But I'm confused. Why do we have to kill the teacher? What did he do?" Lucy asked.
"It doesn't say. But I'm not missing out on this!" Gray shouted. Lucy looked at him with a blank look on her face.
"Gray, clothes."
He screeched. "When did that happen?!"
"You ain't gonna be able to do that on the job! Don't mess this up for us, Ice Princess!" Natsu warned him.
"Oh yeah, Flame-For-Brains?!" Gray responded. He had a scowl on his face, clearly aggravated at the fire wizard's actions.
Erza casually walked up to them, wielding a longsword. Natsu and Gray immediately wrapped their arms around each other's shoulders, mumbling something like, 'Hi, my best friend!' and 'please don't kill us Erza!'
When everything had finally died down, everyone glanced expectantly at Wendy. Lucy shot her a look of sympathy.
"Wendy, you don't have to go if it doesn't interest you." Lucy informed the blunette, who shook her head.
"No, I'll leave this one to you. I don't wanna kill anybody, and I'm wayyy too young to be a teacher." Wendy sighed.
Everyone looked sad for a moment, before Natsu practically bounced up from his seat, startling everyone around him. "Alright! I'm all fired up now! Let's get to work!"
Erza grabbed his wrist aggressively and pulled him down to his seat again. "Not so fast. Some of us have to pack. This is a long term job, we could be there until March, you know."
He sighed, but understood her point. Natsu glanced at Happy playing with Lily and Carla.
"Hey, I've got an idea! Happy can be the class pet!" Natsu yelled, smiling. He ran over to retrieve his little buddy as the others went to their respective homes to pack for the trip. They had decided that they would meet up at Natsu and Happy's house before departing to the airport.
"Where are we going?" Happy asked, confused.
"It's a job across the whole world, on a different continent! It's in a country called Japan!" Natsu informed him as they sat outside, waiting for the others to arrive.