Sebastian watched with eyes full of love as Ciel picked up a stray cat. Before, Ciel was allergic to cats, but ever since he became a demon, things have changed a bit. Sebastian's heart nearly burst as Ciel hugged the kitty close to his chest like a newborn baby.
Ciel smiled and booped its nose. The cat reached out and lightly swatted one of Ciel's fingers. Sebastian watched fondly as the two things he loved most interacted. Ciel would boop the cat, then the cat would lightly bat one of Ciel's fingers.
"Sebastian, we're bringing this cat home." Ciel whispered. Shock filled the crimson-eyed demon, but he quickly recovered and responded with a small, "Yes, my lord". Sebastian walked over, took Ciel's free hand, and walked back to the mansion with him.
At some point, Ciel got tired (they had decided to walk to town), and demanded that Sebastian carry his the rest of the way. So Sebastian dropped Ciel's hand, and swooped over to pick him up bridal style. By the time they reached the manor, the cat had fallen asleep on Ciel, and Ciel was asleep in Sebastian's arms.