I notice most beautiful eastern video game characters have this downwards pointed top lip (tubercle/procheilon?), and while you occasionally see it in whites it's way more common in asians. Idk if it evolved from diet, sexual selection, whatever, but it's a subtle but important part of cuteness in asian characters. Just check any game character you like to draw/model and you'll start noticing it. And conversely it's quite rare in western character design.