Indeed. Its good that the manga shows that the natives can be motivated by evil / greediness just as much as the nordic settlers.
This is Thorfinn greatest trial, and I'm afraid he has abandon of what he wants to achieve.
The art is really good. Maybe it can get far from just that alone. Not saying the story is bad though, its serviceable and solidly done. Pretty nice considering afaik this is author's first serialization.