I think this scene is much more fulfilling if you believe it's the start of their relationship.
Xiao realizes Barbatos (and he knows it's Barbatos there's evidence of that) can actually be devoted and caring. He sees another side to him too.
Xiao realizes Barbatos (and he knows it's Barbatos there's evidence of that) can actually be devoted and caring. He sees another side to him too.
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Imagine Xiao coming back, recognizing who he is (both human and god), and unexpectedly thanking him for a performance. That his devotion +
There are few people, if any, who understand all of who Venti is. I think that if Xiao showed up and acknowledged his value, it would probably have a similar effect to the impromptu performance.