The protagonist has it too easy, and it's internally inconsistent. Oh, and there's some harem-type stuff.
The setup is way too fast and contrived. Nick gets summoned to a fantasy world, and within a few pages gets rejected as "not heroic enough" and offered his choice of properties. A sequence of events that makes no real sense, since the summoners had no reason to believe they'd need to hand over a consolation prize to a rejected hero.
Nor does the fact that he chooses a monster infested farm over 3 other much safer choices. He's an accountant with no combat skills, he should have expected that to be a death sentence, but he picks it anyway because the plot says so.
Late in the book, the author tries to retcon this nonsense in a way that makes no sense either. It smells of a web serial that's been collected as a book, where the author can't be bothered to re-write the first chapter. The farm gets more and more special late in the book as the author fiddles with the backstory.
When he arrives at the farm, it turns out that he suddenly has magic fists, so he easily defeats several monsters that should have eaten him. Then he proceeds the start eliminating curses on the farm by dripping various poisons and plant mixtures on cursed items. His "formulas" for curse removal are often completely arbitrary, and they always, always work.
Later in the book he learns that his curse removal techniques are "revolutionary," and unheard of by the local magic experts. Even though he's completely making it up as he goes along. Apparently no one else in the world's history has tried his fairly simple mixtures.
The book spends a fair number of pages describing in detail what the cursed items are supposed to do, and what bonuses the fixed items give. Neither of which matters, since the curses never really affect Nick despite the "high threat," and the bonuses get completely forgotten once the book describes them.
Everything always goes his way. At one point, he literally gets away with murder. He kills someone in broad daylight in front of witnesses, and suffers no more consequences than a scolding.
Oh, and he acquires a beautiful elf slave girl as a result. The author makes a point of describing how she has large breasts, which is not an attribute I usually associate with elves. Nick swears up and down he doesn't want slaves, but keeps her anyway. As you can expect, eventually they do sexual stuff because she's so grateful.
Later in the book he gets talked into buying some more slaves, even though he really, really doesn't want slaves.
That's pretty much the book. He punches monsters, drips mixtures on curse objects, and gets rich selling produce that only takes a few days to grow.