That's why Devero is so devoted to him, isn't it? Because despite the vast difference in their castes, Master Samir still treats Devero as a person.

Lord Heber--

Devero's yanked to his feet faster than seems possible, and his eyes meeting Heber's are wide with alarm. "S-sir--" he pants, hands lifting as if to grasp Heber's wrists--

Ah, but he has not been invited to touch, has he? Devero aborts the motion, hands trembling as he forces them back down again. "Nothing, my Lord?" he ventures, voice trembling as much as his hands.