User blog comment:Omega natsu2/Chapter 385: Spirit King vs. Demon King, Predictions./@comment-5233713-20140523050814/@comment-5233713-20140523071926

Yet, Hiro Mashima is very good at giving every characters it's regular shining time and to provide fans with a different sets of characters having fierce fights.

He started with a set of characters added a few others and yet didn't forget any of them along the way. And the fillers are rarely going out of the story, to the point some fillers and omakes events and materials are used in the original manga.