Humans/Fullbringers, Five World War Wikia

Spiritual aware humans the can also sense the Reiryoku of other spiritual beings, such as Hollows, Soul Reapers, and other Fullbringers. However, they differ in that they each have a parent who survived a Hollow attack before they were born. Because their mothers still contains traces of the Hollow within their body and passed it on to their child at birth. Consequentially, their powers more closely resemble a Hollow’s than those of a Humans/Soul Reapers. The ability they used is called Fullbrin

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