they didn't change artist. han nim has been the artist since the chapter 1. she herself changed the drawing style tho. and zhenjoo's skin color is novel accurate rn. moreover, the art style and shading of the manhwa is perfect. the problem is that han nim is not drawing the scenes properly and the upload schedule is really weird.
I mean, the literal artist has changed and yeah, it makes sense. He got lighter, but that’s there’s a difference between getting lighter and becoming white.
Like the whole Art from the very beginning was yeah he was like a dark skinned Asian it was really cool and everything he hasn’t been in Russia for like several years to get that light if he’s been in Russia for several years then I can be like OK. I can understand he’s been in Russia for like how long.

why taekjoo lowk whitewashed now