On a proper 10-Scale Rating--where 5 is the average and 10 is reserved for the rarest masterpieces--this is a 6. It's decent, but that's all.
I do like the art, in particular the battle frames. They're drawn well enough to clearly follow the movements and actions, which is something many action comics screw up by choosing bad angles and bad focal points when drawing.
Despite the complaints about the MC, he's got a lot of room for growth, which is great. When the MC comes out of the gate as a fully-matured, confident badass, the comic is usually boring. At least this guy has potential. The story also has lots of potential, but it's in a place where it could get better or turn into a pile of garbage. With only 12 chapters released, it's hard to say which way it'll go.
But I'll be sticking around to find out.