Monsters

Obsidian Horse - A giant black horse like monster with purple markings on it's body and possessing the ability to breath fire. It is the first monster that Tachi and Rin encounter in the new world.

Orcs - A species of pig type monsters that wield weapons and armor.

Ogres - Large blue skinned monsters that are as tall as most buildings.

Goblins - Monsters that are usually the size of children wielding crude weapons and armor.

Fen Wolf - Large light blue haired wolfs with dark blue hair at the top and and 4 large teeth coming out of their mouths, Tachi fights against these monsters in episode 2.

Horned Hare's - Rabbit like monsters with horns on their heads that are known for their quick breeding habits, unlike normal rabbits they are carnivorous and are said to eat humans.

Frost Elemental - A Monster with a cat like appearance that has a body entirely made of frost, its body is entirely comprised of frost making it immune to physical attacks and can attack with Ice Magic.

Earth Golem - Giant monsters that are made entirely of stone.

Crimson Pact Monsters
These types of monsters are those that have been enhanced by the Crimson Pact, allowing for there power to be increased by several dozens of times.

Red Ogres - Ogres enhanced by the Crimson Pact, seen in episode 6.

Red Goblins -  Goblins that have been enhanced by the Crimson Blood Pact.

Red Fen Wolfs- Fen Wolfs enhanced b the Crimson Pact, seen in episode 6.

Red Horned Hare's - Horned Hare's enhanced with the Crimson Pact seen in episode 7.

Red/Fire Elemental - This is the form the Frost Elemental takes after eating the Crimson Blood Orb, gaining more power and speed as a result as well as being able to use Fire Magic.