
the current art has a more defined lineweight, you'll notice a stronger strokes of thick lines (that's probably why you feel like it look messier, it gives a more visual impact).
the faces and eyes also look sharper compared to earlier style. tbh it look prettier for me as they look really expressive. on the earlier chapters the artist was using a more thinner lines, but now, it got more varied, lines as well as colors, they are more impactful

there's also this sense of confidence in the strokes. i'm really glad the editor or the publisher is not pressuring the artist to make it super clean since it can save more time. besides, too many webtoons look super clean it got this standardized super sleek look of korean webtoon, one example was Beware of the Villainess, it got really pretty neat style but too many webtoon use that look, etc, even those hunter/dungeon with male mc genres.

Yeah, it's been getting tiring to read it, I can't even remember the narrative based on the art anymore, cuz everything looks the same, THIS and I Became The Tyrant's Secretary are breaths of fresh air, i really like the use of color in Beware the villainesses, but everyone's been copying the look, and i can't even tell who's who
is it just me or is it slowly changing, like its lowk getting a bit “messier” its not literally messy but yk.. And they all lowk got twinkified.. I swear they were all a bit buffer in the beginning… even penelopes shrinking