[2. Demon]
The most common and the most valuable creatures that are hunted by the 'Spiritual Duelists'
Demons are anomalous evildoers who roam the city, wreaking havoc, and are endowed with various talents that can only be obtained via birth.
They lack the necessary intelligence and will attack anything involving blood, skin, or fear.
Their claws and body parts are their most common weapon, and they can sometimes morph them into a 'Flesh Sword,' which transforms their arm into a deadly blade.
Demons appear to be divided into five grades: (1), (2), (3), (4), and (5), as well as extra titles such as; Beast, Winged, Titan, Abyssal, Shadow, and Half-Demon.
These evildoers, like Half-Demons, may feed on human flesh to improve their grades and progress through a transformation. Their bodies are infused with 'Demon Blood,' which allows them to regenerate quickly and build a stronger body.
Because slicing their skull, which is the major cell of their body, causes regeneration, the best way to exterminate these Demons is to slash their heads, which is the main cell of their body.
(The 'Spiritual Blade' and 'Beta - Terminating Blade' are the only two weapons that have the effect of killing them)
(More information will be given often...)