I read this on KissManga, and literally, chapter's 543's comments were all about how the power of friendship would prevail and Acnologia would go down in one punch. Then chapter 544's comments were like; 'Sigh, I knew it' and 'We all knew this was gonna happen.' Honestly, the end was really anticlimactic. I know it's been dragged on for quite some time, but, really, there could've been a better build up. One chapter to work this out Mashima.