Well. If they can see you, then perhaps they can feel you. Try strangulation! Possibly combined with dragging them to Noah and force-feeding him their mind.

You're going to join our rogue orphanage! Yay!~

... Right were done with the entrance ritual. Totally not a plan to brainwash you.

Uh oh, folded arms. He means business.

"I assume the powers of your other friends must be rather tame."

I assume he hasn't figured out that most of the kids don't really know each other yet (and many of them just don't care about each other)?

"Can you just conjure up a mirror so I can actually see him, then, instead of your descriptions?"

Wait. I just noticed, since when is Ciel not bound to the reflection of Noah anymore?

@Justnoticed

Since Noah's spirit sight lessons.

Second question: How long have you been here? ^^

So he's here to explain all their villainous plans? How... traditional of him.