Esteemed member #83 of the Genius Society, human, female, young, beautiful, attractive.

It's said that she lives in the far edge of the Cosmos, almost never leaving. Sounds like her appearance this time... must be to deal with an issue that has to be handled herself, right?

She collaborated with Screwllum, Ruan Mei, and Stephen Lloyd to create the Simulated Universe, in order to research the mysterious nature of Aeons. She is also an Emanator of Nous the Erudition.

(Source: Honkai: Star Rail Wiki)