Cyril will return to a Marikoth who is clearly jealous and upset that he spent the night alone last night and is doing his very best to act like he's not jealous and upset. He's just not a very good actor.

"Because I love him." Vash says simply as he moves to start cleaning up after the boy's breakfast. "And as the father of my children, I'm really hoping you can learn to, at the very least, stand to be around him."