Although the explanation Wix gave was slightly complicated since she wasn't her twin sister! She wasn't Luna who surely was good with words even so Black still understood his maid completely.
If he was a few days younger than he might have indeed had some problems in compherending her explanation, however as he was now! His current comprehensive and cognitive abilities weren't something to scoff at.
His unique identity wasn't there just for show after all!.
Besides Black could easily tell that his sweet wolf maid was doing her very best to explain to him in as simple of words as she possibly could making him smile inwardly.
Finding the thoughtful gesture of the wolf walking besides him rather adorable. His heart full of affection. He even petted her a few times on a reflex causing Wix to whimper in delight as she further continued.
