Sakamoto somehow manages to narrowly avoid some of the biggest cliches in contemporary shounen-manga.
Not too heavy on flashbacks, and when they do appear- they usually appear short, and jump straight to the point.
Dialogue between characters seem less pretentious, and I actually find myself chuckling or grinning at some of the gags.
The art style itself is seemingly a mixture of fairy tail, rave master & others, as have been stated before.
I was personally never really a fan of the sharp jutted anatomy and flat faces seen in fairy tail and rave master,
but Buster Keel seems to have evolved both aspects.
I still notice a few "off" drawings, but it's generally improved a lot.
The stereotypical personalities have been toned down somewhat,
and I quite like the designs of both Keel and Blue.
Hopefully we'll see less of the mass produced products, and more of this in the future.
I like it
Similar recommended reads: Brave Story (the book as well), Berserk (for the older readers), In Dream World, Kamikaze, Eden's Bowy, 666 Satan, Arch Lord, Immortal Regis/Cavalier of the Abyss.