bittersweet - pretty messed up but written decently

i tend to like angsty stuff but i dived into this webtoon and binge read it all without any heads up, spoilers?; the ending is just pure painn, the blonde dude was sm better for him besides the whole creepy jimin shrine room thing- theres so many loose ends and unanswered questions like whats up with the doctor?? not to mention the plot twists upon plot twists. the relationship as a whole was lowkey toxic and manipulative bc of the crappy mc so this is generally not my thing although im sure plenty of others would appreciate this better than me + this should definitely be under the psychological and supernatural tag