Arland looked over at Sebastian to see if he had any clue as to who this child that clung to Ciel was.
Sebastian saw Arland's glance towards him and turned to the kid to get a closer look, as he got a slight sight of the boy when he dashed into Ciel's arms from the door but didn't get a very clear image of just who he was. He saw the boy clearly with this second look though, and although Ciel didn't know it yet, Sebastian had been trying to find this young kid for years, nor did Ciel know that Sebastian has, to this day, been harboring a large secret from Ciel, the secret revolving around the mystery kid's true identity and his relation to Ciel. Sebastian had thought about telling Ciel this particular truth long ago, but the kid had vanished years back and no matter how hard Sebastian searched, in which Sebastian had searched up and down while going in just about every direction, Sebastian couldn't find even the slightest trace of the little boy's whereabouts anywhere. Sebastian also kept his mouth shut though for another reason, that being that Sebastian wasn't sure Ciel was ready yet to learn about this kid, nor what Ciel's reaction would be to the revelation. He feels Ciel has the right to know the truth though still, just as he always felt Ciel had the right to know and that his young master deserved to know the truth about this boy, and seeing the kid alive and seemingly well, Sebastian now feels it's finally time to tell Ciel. And with that Sebastian approaches his young master.
Ciel looks to Sebastian, seeing his butler coming to his side, the young boy still in Ciel's arms. "Yeah Sebastian?"
Sebastian "Young master? I have something to tell you. In fact I probably should have told you this long ago. But I just didn't know how to explain this particular truth to you, nor was I even sure of if you could handle it back then."
Ciel "It's alright. Just go ahead and tell me now."
Sebastian takes a deep breath and then kneels to Ciel and the younger boy and says "Well Ciel. It's about this young boy here." Sebastian then takes the boy into his arms and continues to say "Your parents didn't want you to be told of this. But this child, his name is Drew Phantomhive. He's your younger brother master."
Ciel just blinks his eyes when Sebastian reveals the fact. It shocks him of course, the fact that he's been a big brother for years and had never been told at all, and at first Ciel can't speak a word, he just looks at Sebastian and then Ciel looks at Drew as well. But then after about 5 minutes he looks back to Sebastian who has Drew in his arms, and Ciel stutters to say "M..my younger b..brother?..Really?...W..wow.." He then looks to Drew again.
Drew nervously says "Y..yeah. That's who I am Ciel. Y..you're my big brother."
Ciel, seeing Drew's complection starting to pale again like before, holds his arms out.
Sebastian lets Drew go and watches Drew dash into Ciel's arms again.
Drew wraps his arms around Ciel tightly, and as Drew's nerves begin to get the better of him, Drew begins to cry and tears stream down his cheeks.
Ciel, seeing Drew's tears, wraps his arms around his little brother and brings him into a close secure hold again. He then rubs his brother's back and says "It's okay Drew. I'm right here. I've got you."