Merciless was just walking around the castle alone, his father (nightmare) was obviously busy same w/ killer. And angst and Crescent were just in their rooms chilling not wanting to be bothered since Crescent and angst don't really like merciless much because of his.... Sneaky tattletale ways. He had loved to get them in trouble when he was bored. It was somewhat entertaining for him but anyway he was just walking around the castle probably gonna do God who knows what-