1. The MC is omnipotent, he finds best of gear just like that, by jumping through the roof of the random building.
2. The book he finds even checks "quests", like wtf? It have every piece of info he needs at the moment.
3. Antagonists here are written so poorly, it's not even funny. Hero is cringe-edgy-asshole, just because he can; the nun-lady treats him as sugar daddy and one person, that actually could make any sense in hero's party says that mc is coward by walking off.
4. The main girl is just random slave, who mc rescued at some point. There's no chemistry, but yeah "she loves him".
- and there is so much more that i can point out about this...