'my beloved oppressor' -- it mostly gets hate for how quickly a certain character gets forgiven. And i kinda agree although, personally it's one of my favourite work too haha. It's well written story, but i too think the second chances should've been given a bit more of chapters since it's already such a good work.
'Ennead' comes in mind.
It touches a lot of insensitive topics and I have noticed that its readers don't shy away while expressing complaints or ignoring its issues. (doesn't help that it's based on Egyptian mythology...)
I personally really like it, especially the story telling and attension to detail. But ofcourse, even I will never deny that it has a lot of flaws.
(It was so fun to read on bato, where we could read everyone's comments and interpretations after every chapter!)

Give me a manhwa/manga/manhua that constantly gets essays upon essays of criticism, hate, complaints in the comments... i like reading peoples complaints since I sometimes learn a few things that could help me with story telling and it's fun seeing so many people upset (upset over valid reasons most of the time)