I would recommend my story. A world of Monsters, follows a monster and a human in a system word, with a Buddhist/Hindu philosophy. The System is especially influenced by this philosophy.
A World of Monsters.
Things I can promise, in the story:
1. Grammar [As per Grammarly]
2. Monster will be a monster while the human will be a human.
3. Evolutions.
4. No harem.
5. Grimdark
6. Well defined characters [In my opinion at least XD]
7. No OPness.
If any of these things catch your attention, give this story a chance. I would recommend that you read the story until chapter 8, which is ideal, but until chapter 6 too would give you a clear idea.