@ZombiesAreNotOkay
149 on egscans's site,
and I believe that's the end based on it's volume tag (volume 15 is the end for collector edition) the release post back on august said that it's the end.
on another note,
I found that this series ended abruptly.
It goes from happy-go-lucky adventurer, then goes to seeking an immense everybody-wants-it treasure. In the middle of it we learn of yongbi's past, building his motive, his and his companion 'hidden' personalities, and right after every pieces are set for some kind of grand finale, it ended like that.
The 'last boss' yongbi fight is more of a customary last boss fight to end a series than an actual fight to end a conflict (unless they wants to show that everything is trivial for yongbi and he's there not for the so called grand conflict that happened at that place, but for other personal purpose unrelated to everything but himself)
Overall, we get more closure for side-character than for yongbi and his companion problem.
While there are endings which emphasize on continuing with their live, it's always a bad taste leaving things inconclusive - moreover from the main character perspective.
This series gives hint of another arc yet not only they doesn't deliver it, they also doesn't close the loose end from current conflict.