Somnus watches Ardyn as his expression twists from mocking to anger, perhaps even disgust for all that the other has done or did not do. Yet in the same breath, he acknowledges that Somnus hadn't been free, either. While surprising, Somnus is quick to correct his assumption that Ardyn thinks any deeper of it. Perhaps to the other, the lack of freedom only makes him complicit, something to blame him further for.

He will not dispute to correct any assumption, for Ardyn is free to believe what he believes, and now is not the time.

"Goodbye, brother."

Somnus makes no motion to stop him as he leaves, saying nothing more. It is clear that Ardyn speaks from a place of pain, loathing, and frustration, and centuries of wrath consuming him. He is free to feel those things, and he needn't tolerate Somnus' presence any longer.