As for how he felt about slaves in general? Having being one in the past for powerful beings, he sympathized with them. And he will try his best to help if he could.
'Slaving away is not nice, even with a good master who thinks for you. After all, at the end of the day... you are still nothing more than an object to most of them.' He thought.
And speaking of slaves, they wore dirty linen clothes, and in some cases, sack bags tied with ropes to fit their figures. And their clothes had a design of most of the chest being bare.
And the brand was placed onto their chest, which was open for all to see. In fact, it was so open that, even when one didn't really mean to, they could still slightly see the women's exposed breasts.
"If you've heard me, and desire no further instructions, you can take a rest, I'll call in a healer in a moment. If not, raise your hand and I'll repeat myself again." He said as a conclusion, and no hand was raised.