There's a worry that Vash does his best to hide when Cyril doesn't visit in the evening. Worried about how much time he's missing with his sons and how much better he thinks the twins will be under Cyril's care.

Even after the boys are put down to rest, Vash stays up. Hopeful that maybe Cyril is just busy. Maybe he'll still stop by and he wants to be awake for that.

Or, if he was honest with himself, he's trying to avoid more nightmares. Feeling rattled enough by the one he had earlier.

Every so often Knives might notice the way his brother's eyes start to close before he snaps them open again. Fighting the urge to sleep.