I have a high hope for this story...
At first, reading the title I thought the protagonist will try to explore his job and find a new way to use it. But now they give him some op eye, it's just like "Hey your job is useless, but here's some godly eye. If you use it you will be strong". Now...
@Shyri I don't read the light novel, but I read the webnovel. And in the webnovel, the piggy duke spend all his mana and get slimmer around chapter 100. But from what I see here, the manga takes a different route from the webnovel. Some changes are drastic, like few supporting characters are...