Nozomanu Fushi no Boukensha - Vol. 3 Ch. 13 - Promotion Exam

[MangaDex]

 

[Kaarme]

Even in a proper fantasy world of magic and dragons, humans are often the worst monsters. From the pov of story writing alone, a humanoid villain is usually more effective than some obscure monster, because it's more difficult to feel the evil from anything but a fellow human.