How do the floors in the upper structure handle the sloping incline of the geometric shape? Is there just a lot of closed off volumetric slivers between the planes of the floor and ceiling and shell, or is there only one or two floors, with the upper floor having a larger rising canopy?
Those look like young versions of the two sisters, White Foot and Black Foot, from the information merchant guild in the WebToon “Wail of a Dragon’s Rage”:
https://www.webtoons.com/en/fantasy/wail-of-a-dragons-rage/list?title_no=6330
Until proven otherwise, I think I’ll just adopt this art into my own head canon for those two characters in that series.