Fairy Tail x Rave is a special crossover by Hiro Mashima, featuring the main leads of the Fairy Tail and Rave Master series. This was released one week prior to Japan's Golden Week. Natsu, Lucy and Happy are on a mission to subdue a Mage who is causing havoc on a casino. While on the job, Natsu got separated and meets up with Haru while Lucy and Happy meet Elie. During their time together, Natsu and Haru learn about one another and explain their goals, causing each of them to think of the other as a bad person due to a misunderstanding. The two soon begin fighting and later find out that Erza was the wild Mage, who proceeds to beat up both of them. The two later go their separate ways, still convinced the other is a bad person.