Kiba brushed a strand of her hair from her face and then gave her a light kiss. He didn't say any word regarding the dark side because he couldn't bring himself to lie to her.
In his life, he had killed far more people than he could care to count. Just some 10-11 days ago, he killed Lisa and her team at the wasteland. Then there were the slum overlords and their subordinates whom he slaughtered in cold blood even though there was no grudge involved.
As far as he was concerned, he had embraced the so-called dark side years ago. But he couldn't tell this to Agatha. He wanted her to be in the sweet dream without having to worry about reality.
Kiba also couldn't bring himself to hate or reprimand her for stopping him at Sarah's house. He knew her actions were motivated by the feelings she had for him.
She believed he would be haunted by his actions. That was why she intervened. So how could he bring himself to hate her then?