While I do enjoy a lot of the manga, I feel like one of the the things that drag it down the moat is the protagonists kindness.
Example: elven bandits stole some tomatoes, which is fine because they work to pay it back later, but there literally wanted in both countries. Another is a character they introduce at around Chapter 40. It's an angel responsible for a TON of deaths and supposedly has the power to destroy the planet but instead of letting them destroy it they have to do the whole, power of friendship, i can give a machine waifu a soul, please don't do the good thing and destroy it.
Whenever he should honestly punish someone or send them away he doesn't, and it gets kind of annoying after the 3rd time. Other than that I enjoy the brain dead funny.