Ciel was acquainted with Julius during her time at the Magnolia Compass, though she did not bond with him to the level of friends. She spent a childhood following strict orders and was taught that rules were more important over matters. Due to this strict upbringing, she was unable to develop her social ability and found it hard to respond in normal conversations. Years later she joined Blood and asked the Protagonist to be her first friend. When she was trapped in the red rain in a mission to protect a malfunctioned God Arc Soldier from Aragami harm and adhered to the Friar Director's orders to protect the God Arc Soldiers and stay instead of following Julius's inferior authority to save herself.