what a fantastically unnecessary grammar error to make...
A boy of thirteen years - rather small and fragile-looking. [Indicates his height - barely even reaching his chest. Ha ha, Ciel's so pathetically tiny.]
He wears an eye-patch over one eye. Have you perhaps seen someone like that around? [It shouldn't be possible to hide his presence from Sebastian, but then, it shouldn't be possible to spirit Sebastian away without him noticing, either.]
Should he be here I am most anxious to return to his side.