As for me manga norms, let's judge normally a blacksmith is a weak profession, because he is only capable of restoring and modifying things, for them the most important thing is potential in battle, and besides, this Middle Ages does not need to hate this manga because of the stupid world he is thought out. Yes, there are drawbacks, for example a harem, BUT in many mangas there is such a thing as a harem, probably already many should have learned to close their eyes while reading this. As in my opinion, if the manga does not slip, I will put it 8/10