Responses
I did check and I am myself an Asian/Taiwanese who read and watched several Asian dramas, novels and comics. Regardless of the genre there was often the sudden appearance of a psychotic stalker that threatens the main pair...
I enjoy reading Unromantic but I find it annoying that an antagonistic stalker has to be suddenly in that story.

Does almost every Asian Drama/Story needs a psycho stalker as the standard surprise antagonist? I saw that plenty times in China, Hong Kong, Japan and South Korea entertainment media.
I am starting to think they only exist as dramatic plot device to increase the bond of the two romantic main leads AND to make the ML look more heroic/desirable/sympathetic...
There is really sth wrong about using this trope.