The problem with this story is that yes, the girl is stupid, yes the girl is weak, and above all she's in the wrong. But this manga doesn't want to acknowledge that. It has this lackluster main character act this way without trying to make a point about it. There is no cause and effect in this manga whatsoever, and if something is stated it might very well have no purpose whatsoever.
It is a strong believer of "tell don't show" and it's constantly trying to tell you how to interpret something without actually letting anything sink in. If the MC's so smart, why is he letting Iris do so much junk?
He tells any kind of exposition to us in the form of long-winded thought bubbles riddled with statements that we could have just deduced ourselves. He's the very definition of a blank slate without any personality whose only purpose is to be over-powered.
I wasn't expecting much from this manga, but I haven't read anything this bad in a while. Might keep reading from time-to-time just for the artwork.