Demon

Demons (魔物, Mamono) are animals whom without any intelligence and control over their strong mana, run rampant and become a dangerous creatures. However, in case of a human, they are called Devils (魔人, Majin). Devils rarely to occur, but are far stronger than a normal demon.

Appearance
The distinguishing feature of demons and devils are their red sclera.

Personality
Most demons and devils are creatures that are driven entirely by their uncontrollable desire to destroy everything in their path.