This was a precise and violent process, intended to centrifuge the "twisted" attribute from the essence of a demon's soul through high-frequency energy oscillations, then purify it.
The demon let out an even more violent, soundless wail. Its energy body flickered erratically, as though it might collapse at any moment.
In the end, a drop of liquid energy about the size of a thumbnail, black as ink yet seemingly containing endless vortices that constantly spun and stretched themselves, was successfully separated and suspended in midair.
Even the air around it warped slightly, and light bent strangely as it passed through it.
"The first sample of 'Twisted Power' has been extracted successfully. Purity: 73.4%. The impurities consist mainly of residual soul-binding marks and require further 'tempering' for purification."
Using a transparent crystal test tube prepared in advance, its inner walls covered in confinement incantations, Wu Heng carefully collected the drop of "Twisted Power."
The instant the test tube touched the droplet, the runes on its surface flared brightly, sealing it securely within.
The process was repeated eleven times in total.
When the twelfth demon had been completely dissected and dissipated into nothingness, twelve crystal test tubes floated before Wu Heng.
Each contained a differently sized drop of black liquid, all spinning continuously and distorting the light.
"Next comes 'parasite-style refinement,'" Wu Heng announced expressionlessly. The Reaper Butler recorded the experimental process with meticulous care at his side, not daring to be the slightest bit careless for fear that Wu Heng might notice him and, on a whim, hang him from the operating table as well.
Wu Heng controlled twelve new energy conduits, connecting them to the bottoms of the twelve test tubes. Their other ends converged on a larger central crystal test tube covered in more intricate runes.
"Activate the 'Power