Wolf in Sheep's Clothing.

Seeing his attack shred Willem into nothingness, Lucius used [Void Step] and instantly appeared over where the body had previously been. 

The shadows underneath his feet exploded, covering the space inside a dark veil. Lucius then constructed a barrier out of his [Annihilation Energy] to further reinforce this veil of darkness. 

After confirming that he had hidden this space sufficiently, Lucius reached his hand into the blue mist of blood and retrieved a small cluster of light.

This light cluster was extremely dense and solid and was similar in looks to Willem. This was the Condensed Soul that powerhouses in the Stage 4 and Stage 5 realm possessed.

A Condensed Soul was the precursor to the Existence Crystal which was the final evolution of a soul and the mark of entering the realm of Stage 6.

Holding the unnaturally heavy soul within his hand, Lucius saw an expression of extreme anguish on the figure's face.