C543 The Madness of Soul-carving

It's impossible for a person to notice that there's a soul in his body, but the aura that erupted from the Demon Pupil and Spiritual Embryo is like a mirror, allowing me to clearly see what is happening in his spirit aperture.

However, a person only has one 'Soul Root'. It is like a socket, and only corresponds to the 'socket' of a soul. The extra soul can only be possessed like a ghost. However