That might be Supreme Federal Court justice Alexandre de Moraes in the background, of recent internet fame for blocking Twitter in Brazil when Elon threw a hissy fit with its government, which happened around the time Brazilian Miku was born, and if so is a hilarious and nearly absurd reference to include. Here's a picture of the funny cape & belt combo they use. I'm not sure who the buried person is supposed to be, if anyone.
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