Could Lucifer be the statue shown in the last page of chapter 135?
(Not a perfect replica due to different pose, but the overall look is similar enough.)
It’s fitting as he’s a demon who used to be an angel before he was banished to Hell. Our!Ciel was once a nice, sweet kid born in a rich, loving family until he was kidnapped and reduced into a plaything in a cult. The twins’ lives basically fell from Heaven to Hell in an instant.
After our!Ciel condemned God, it was as if the Devil himself smiled and sent a demon to lure him further into the darkness…
midnight-in-town 