While it's obvious that there are 4th gen visuals that have more "Korean style" visuals. The "doll look" (i.e teeny tiny faces with huge eyes) as I've now coined it, wasn't really that common until Tzuyu's explosion in popularity. Now, these features are EVERYWHERE on visuals in the 4th generation. Imagine not even being from Korea and still having such a big impact on visuals, Tzuyu only.
Visuals before Tzuyu
Visuals after Tzuyu
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