Yeah the art style changed. Artist changed maybe
I'm pretty sure the artist is still the same because HAN (the artist) is still posting the updates. The artist's style may simply have changed over the past few months, especially since the manhwa just came back from a 3+ month hiatus.
Adding on to this, if you look at the earlier chapters' artstyle and even chapters from a few months back and compare them to the current artstyle, they are very different despite still being by the same artist.
can someone enlighten me about the change of art style? im not hating or anything but the art style was rough (good kind) during the early chapters