The MC is not just OP.. He knows everything, he can do enything, and no one can even scratch him..
And since he is the MC all the other characters are like "If It is him, that's ok, lets not think too much about it".
Aside from that, the story is plain and too fast paced. They don't explain much of anything, so It's a total mess. :s
But hey ~ at least the art is pretty...