User blog comment:FairyRaven/Fairy Tail Chapter 438: The Seventh Guild Master, Review and Commentary/@comment-1839664-20150601211040

I find it funny that Mashima posted on twitter that he's mad at his last week self for deciding to develop the story in that fashion, and was struggling to get his storyboard finished this week (Note that Mashima draws his chapters in advance. So anything he says about last week's storyboard is likely referring to 441)... and then this happened:
 * I'm finished with the first draft of the story! Sleep?  Ｗｈａｔ　ｉｓ　ｔｈａｔ，　ａｎｄ　ｄｏｅｓ　ｉｔ　ｔａｓｔｅ　ｇｏｏｄ？
 * Slumbeeer...I mean, storyboard is over! Time to go home and play games.
 * (Around 12 AM at Japan) It's about time I sleep...sooner or later.