Kifuu

Kifuu is a specialized fighting style created by Demons to simulate the same effects as SPMA. Kifuu utilizes a Demon's Soul and their own Tao to manifest it in various ways and forms, this can be to increase their strength, speed, and range. Kifuu can also be used to directly attack the Light Soul of a Human, causing much more internal damage than a normal attack.

Rakudo
Rakudo focuses on the generation and storage of Negative Tao