One of the most common enemies in the world of fantasy anime are different kinds of monsters. Some are beasts, others are demons, but all of them are formidable opponents. Anime about monster hunting pits heroes against powerful enemies with strength that goes beyond what one would expect from a human being.
A popular title in the genre is Demon Slayer, which tells the story of a young boy trying to save his sister, who has been transformed into a demon. There's also Is It Wrong To Pick Up Girls In A Dungeon? which takes place inside a monster-filled labyrith. Looking for something a little darker? Try Berserk, an anime in which the mercinary protagonist is constantly up against monsters of all sorts.
Which monster hunting anime are your favorites?
Tanjiro Kamado is living a peaceful life with his family until a demon attack leaves him and his sister Nezuko as the only survivors. Unfortunately, the two of them can't grieve in peace, because Nezuko has been transformed into a demon herself. In order to figure out a way to change her back, Tanjiro joins the Demon Slayer Corps, an organization dedicated to protecting humankind from demon attacks.
After Naofumi Iwatani is summoned to the world of Melromarc along with three other earthlings, they learn that they're expected to save the world from the Waves of Calamity. These Waves are mysterious in their origin, but one thing that's clear to everyone is that they result in the appearance of dangerous monsters. Those monsters need to be slain, and the job falls to Naofumi and the other heroes.
Bell Cranel wants to be the world's greatest adventurer. To do that, he'll need to venture into the monster-filled dungeons and slay a variety of dangerous creatures. At his side is Hestia, a goddess who wants to create her own familia (basically a group of adventurers). Together, the two of them take on whatever dangers await within the dungeons.
The world is overrun by gigantic humanoid monsters called Titans that devour human flesh. In order to protect themselves, humanity has barricaded themselves within a series of walls. Those who venture out to fight the Titans are called the Survey Corps. After his home is attacked by Titans, Eren Jaeger decides to join the Survey Crew. As he takes down Titans, he discovers that they're a lot more than just mindless monsters.