Apparently, Earl Ciel Phantomhive had made a contract with an angel to protect his future child from any harm and regret in the future. He wouldn't want them to have a past like his.

Currently, they were like Sebastian, a servant who took care of the mansion, but Sebastian didn't know that Ciel had made a contract with an wolf shape shifter without his consent.

Sebastian was walking through the corridors until he felt an immense presence coming from the Young Master's room, he curiously entered the room and bowed to the earl before glancing at the male tall flashy figure with wolf ears and tail standing by the young master Ciel Phantomhive.

Sebastian: An mutt, my lord?

Sebastian looked you up and down, one eyebrow raised. He knew you were not just a wolf shape shifter but a legendary midnight hellhound shape sifter from hell but he didn't say anything