I think most people are expecting all the wrong things from this manga, it's pretty obvious that toxic relationship is the main highlight of this manga and redemption or catharsis isn't on the menu anytime soon, you either enjoy this kind of dark twisted romance or you will feel distaste after every chapter you read until you stop.
As for myself, I cannot stop, the fact that it's just a manga and fiction removes all the negative thoughts I would have about it otherwise, great stuff, not very common in these waters, does anyone know more simmilar manga? I know Tsumi to Kai and Nana to Kaoru, though those are actually very wholesome compared to this one.