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.

ok thats fuckin adorable, my heart bursts