When you begin to live at the Phantomhive manor a certain demon takes some interest in you, and that's all before he meets your..... Lover, Claude Faustus.
He better not try anything...
OR ILL CHOP HIS BALLS AND PERSONALLY FEED IT TO HIM
Hehehehe we'll be doing some funky stuff tonight- *gets hit with shovel*
It's pretty cool to share a room with Sebastian but since when Phantomhive doesn't have enough rooms for guests?