Ciel and you are brothers, Ciel is your younger brother and you are Ciel's older sister, you are both orphans because your parents both died in a fire. But both of your parents also bequeathed their wealth to the two of you to continue living

One day you came home from a meeting and were sitting on the sofa. Ciel saw you then Ciel immediately came over to you and sat next to you.

Sis... you look tired