Essence

Essence is the manifestation of one's soul in Familiar, and can be used for a wide range of abilities. The specific abilities and their strengths differ from person to person and are dependent on a number of factors, such as experience, training, and innate skill.

Essence is an ability that all those with a soul can use with enough practice. Because Essence is the manifestation of the soul, it can appear very differently depending on who is using it. For example, the color of Essence differs from person to person.

It is mentioned that anything with a soul has an Essence, including Humans, despite having a Familiaris. Leeches, being soulless, are the only known form of life that do not have Essence.