Once he finishes putting everything away, Vash picks sits down with his sons. Holding them both closely on his laps and humming softly to them.

He wishes Cyril was here. He wishes they were living peacefully together and happy. Without fully realising he's doing it, he begins to resonate with his sons. Not enough to fully activate any of their powers, but a connection is made regardless. One Knives might be able to feel from the three of them.