If it was the manager they're less likely to be shipping his body back somewhere though, no? And same with the spa lady.
We know it's not the guy because he's in Ep1 with the body being loaded and his expression leads us to believe it's likely not his mother or wife.
Certainly not Kai's, so it makes me think it's one of the family or the girl Paula. The BLM guy is a big pic too with the coughing, that seems a strange hint to drop unless it's a misdirect.
I think it's going to be the BLM guy or, and this is my real guess, it's the son
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There is no good. There is no evil. There just is.