the main character was a demon lord’s descendant (Maou I think) but it takes place in the modern day. He’s kinda a bum, has black hair. Basically the top is a blond guy whose job it is to subjugate the hero (it’s part of his bloodline as well) and he’s rougher and I think implied part of a criminal organization. They’re both in their thirties and it’s somewhat enemies to lovers.
Was it this one? The top isn't blonde, but the plot is similar.
https://www.mangago.zone/read-manga/datte_maou_sama_wa_kare_ga_kirai/
I’ve noticed along with the artstyle change, the panels have become increasingly busy. There is just far too much going on, way too many patterns and not as much focus on a specific subject. In the pursuit of detail it’s becoming a bit of a nightmare to look at. Difficult to pay attention when my eyes aren’t being drawn to a specific part of the picture.
The earlier chapters had a lot of patterns as well to be fair, but the focus on characters and fading made it far more bearable.