Kuroshitsuji: Love, and Blood, Intertwines

Tuatha Sidhe Crimson has always been a friend to the Phantomhive family. But one day, their lives were cut short. Upon witnessing their deaths, she made a vow to look after their only child, their son Ciel. However, when she finally found him, alive, she noticed he was not alone. With him, was a man with short, slightly jagged black hair and was clad in black. Ciel told Tuatha that he was his butler, Sebastian Michaelis. She did not know who Sebastian was, or where he came from. All she knew was, she cannot trust him very well and has not put one bit of trust in him for the two years he was serving his master.
Also, when Madame Red returns, she was not alone either. She had a butler of her own with her, but something was different about him to Tuatha. The two of them became the most unlikely of friends rather quickly, but she started developing more than those normal feelings you have to a friend toward him. Could it, possibly, be love?