I think it's probably cause of the fight with the sister of that guy. People might've felt like they couldn't sympathise anymore despite knowing that she was now insane and kinda beyond all reason lmao.
True, it may have been the cause.. Well, if you look at it from Choi's perspective the sister wanted to kill her first and thats why she wanted to kill her as well.. Also, she thinks that like her ex-boyfriend, the sister was like someone who controls Dongjoo...
Anyways its sad that the rating went down after having an unhinged Strong Female Lead..
Exactlyyyyy I'm sad to see it low :((
Okay this story is good and the last time I read this it had a higher rating and I'm curious why the ratings lower down when this is such a good story?? ╥﹏╥