Every time a demon devours a human, the demon becomes stronger,and they can eventually develop unique supernatural powers, known as Blood Demon Arts.

The power bestowed by the Blood Demon Arts is different from demon to demon that seem to be based around a central theme, some of which are seemingly based on a demon's past, personality, interests, and/or occupation.

As suggested by its name, all supernatural phenomena and effects use their wielders' blood as a medium to manifest themselves in reality.

Essentially, Blood Demon Arts are blood magic.

The abilities and effects granted through Blood Demon Arts can vary greatly.

Some can be combat-orientated or more supplementary and practical.

Some are more simple and recognizable while some are more complex and unorthodox thus making the abilities of demon-kind extremely versatile and powerful.

A universal weakness to Blood Demon Arts is that they are susceptible to both sunlight and Nichirin weapons, meaning that they will disintegrate or be dispelled when exposed to sunlight or cut with a Nichirin Sword, possibly attributed to the fact that each ability and technique is created from a demon's flesh and blood.

Another weakness is related to the demon's blood, where if in some situation where their body's blood gets depleted, they will be unable to use their Blood Demon Arts.