Responses
https://www.mangago.zone/read-manga/ares/ not-so-horrible honestly, it kinda grew on me after so many years. Still my favorite manwha ever :)
https://www.mangago.zone/read-manga/mob_psycho_100/ a classic
I tried to go for objectively bad art - inconstant anatomy and proportions that are not part of an artstyle but are instead drawing mistakes.
Honestly the first few chapters of Attack on Titan could fit your theme except that I found it so boring that I can call it a good story :/

I'm usually super picky about art but sometimes I dig in if the story is good. I've recently read one and now I'm in the mood. Please suggest some before my mood fades ╥﹏╥