The fl is pretty strong but it also is just apart of her monster taming skill. Shes definitely not physically strong. The male lead is the worst because he doesn't even try to understand why the fl wants to live with monsters. He just tries to bring her back to the humans and wants to use her for the monster hunt. (at the start atleast but still its stupid because she explained many times she'll never be apart of it) I really continued reading this for the fl and her relationship with the monsters + her and the saintess. (RIP my yuri route) Even though Ihated the ml at the start he did grow as a person near the end of the manhwa which is nice. He even learned to know there are good monsters and bad monster. (Even though its the same for humans but whatever)
Another thing is that even though I like the monsters they did erase the fl's memories at one point which sucked. It's just a cruel action even if they wanted her to stay with them. Not only are you making her forget but also hurting the ones she used to know and care for.
Amonia is a really good character in my opinion though I can see why people wouldn't like her in other ways
The slime is the REAL goat of this manhwa. (nadium as well)
What I can say is I can recommend this if you ignore how much you want to throw the ml into a dragons mouth at the start! He did grow on me though.
Kind of a rushed review but I enjoyed this manhwa a lot despite it's flaws!