It's infuriating the fact that the MC is so naive even though having already chunks of experience from another world. I thought that the MC would be atleast wary, smart, and cool headed after the experience.
Okay sure, it's a comedy manga but too much naivety is very annoying. The premise is good but the characters aren't that good. Being dense is one thing but insane naivety is too much, for me atleast.