Fairy Tail Volume 8 by Hiro Mashima
The war between the Fairy Tail Guild and the Phantom Lord Guild continues as Natsu fights the last of the Element 4 and then goes after Gajeel. Gajeel also uses dragon slaying magic but his is based on iron dragons, so will Natsu's fire dragon power have a chance? More big, long battles are told in this volume and still the war is not resolved!
I like the action a lot, there's some intelligent strategy and fun banter along with all the bashing. But this vollume is mostly battles with occasional monologues about motivation. Readers finally find out Phantom Lord's ultimate purpose in picking the fight, which is a rather shallow one, so readers are even more inclined to root for Fairy Tail.