Reading some of these comments makes me somewhat upset. Reading the manga week by week - though that's the way it has to be - apparently makes people demand a hell of a lot in every single one, with who-knows-how-high expectations.
I've just finished catching up to this one (read 7-17 for the first time yesterday and today) and I am astounded at how unbelievably well-paced this manga is. It's really incredible, and one of the first times I've seen it done so well in a shounen manga (DGM had a similar feel going in the beginning but then the plot went bonkers; in a good way, mind, but it dropped the kind of steady-push plot we have here).
Between character introductions and development, characters coming in and out of the story (I love that Sui only drops by here and there), new villains appearing and old ones plotting stuff, this is simply really, really well-done. There's never too much action/ominous stuff without a break, and the peaceful times never stay completely stress-free themselves. There's this really excellent balance here.
I'm very surprised to read comments that complain about Double Arts getting "slow" or "boring." The only way I can make sense of them is to ascribe them to people's apparently laughably short attention spans, but that seems cruel so I'll blame it on people hating to wait a week between chapters :P
Anyway, I think Double Arts is fantastic. It got a bit over the top with all the dramatic screaming in the battle with Zezu but totally redeemed itself with the second action scene, all beautifully woven into a single amazing chapter. I really liked this story with Hine, too - I didn't find her annoying at all, but funny and charming. Sure, she was too "Mary Sue" to put into the storyline permanently but, again, I'm rather surprised people suspected that Komi Naoshi was actually planning to attach her to Kiri's other hand.
In any case, this is the most promising new manga I've read since DGM (out of those I've followed from the very beginning, that is) - and that one was a whiiiiile ago.
