Shadows House (Dub)

The Shadows, characterized by their pitch-black appearance and tendency to emit soot when agitated, are a family of nobles who reside in a colossal manor deep within the mountains far from other humans. When a Shadow child is nearly of-age, they are assigned a Living Doll who acts not only as their attendant but also as their second half—the faces they could have had if not for their complexion.