Potemkin stops waving and stares down Ky like he's caught him. He's very good at giving off that look, but it doesn't come attached to any scolding. He looks down and lowers his hand so that it's over Ky's own, so all Ky has to do is open his fingers.

"Don't strain your eyes, if you persist on reading this late," Potemkin doesn't raise his voice past what's appropriate for the time.