Things Would Never Be The Same Again

"I will have My Vengeance," William said in a voice filled with killing intent. 

If looks could kill, Felix would have died a thousand times over already. William's gaze that contained his desire for revenge never left Ahriman's Heir, who had subconsciously taken a step back due to the intensity of his gaze.

After saying his parting words, William turned around to enter the purple portal behind him. He didn't look back as he resolutely left the battlefield. Right now, his newly obtained powers were unstable. 

His patched up soul still needed some time to adapt to its new form. Forcing himself to fight would only damage his soul, and allow the corruption of the Darkness to take over it completely.

Also, he knew the price he had to pay in order for him to use his powers. Right now, he didn't want to lose any more precious things. He had already lost enough.