I enjoyed the side-story. IMO, mashima can put all the fanservice he wants as long as it stays in side stories. That is why I didn't mind it in this chapter.
Dat Gajeel/levi scene though...Even though it was probably an allucination, it was still nice to see ^^
I'd give it a 4.5/5. Cute little side story.
On a side note, I don't understand why people complain about the fanservice in the chapter. It's a freaking side story for god's sake, aren't you guys never pleased?
At first people complained about the fanservice in the actual story (understandable) and now they are even complaining about it here?
I heard many people saying that mashima should put fanservice in side stories instead of the actual story and now that we finally have that, people still complain about it...I guess I will never understand these people man.
Anyway, I wonder what the next side story will be about ^^