Killing Carl's murderer had left Derek as empty as the Void's name implied. Without his revenge, without his brother, Derek had nothing to live for. With each step he took, Derek discovered that life on Mogar was going to be different.
There, he was strong and fast.
All the memories of Lith's painstaking training sessions and struggles to overcome the bottlenecks were gone, leaving behind only the results. To the Void, he was a version of Derek McCoy who had just come from Earth and found himself in a body with the prowess of a Divine Beast.
The feeling of power and freedom as the wind struck his face was intoxicating. Derek had no heart but he experienced an adrenaline rush all the same.
It wasn't just because of his newfound physical prowess, but because he had once again no care in the world. Living or dying made no difference to him but knowing that this time he could do a lot of damage before kicking the bucket brought a smile to his face.