Hate to Love dramas?

I watched Secret (2013) last year and has never found any other kdrama/series quite so compelling ever since. I've been searching for other kdramas with similar plots, but can't find any. I would love it if someone could recommend any. They needn't even be kdramas: animes or Western shows would also do.

My requirements:

• Male lead hates female lead (real hate, not the kind where he is in love with female lead at first sight and still tries to hate her)

• Male lead could be either at a direcit position of power or he's just rich and wants to take revenge/or just make female lead's drama a living hell

• Eventually falls in love with female lead, and should only happen pretty late into the series, not in the first few episodes

• Female lead needn't be stunning. I'd rather watch someone plain (like in She Was Pretty) and not some girl who's called beautiful by every person in the show at least once.

I know wanting ALL of this in one single drama is asking for too much, so I'd take suggestions that fulfil even 1/4 of the requirements. Help really appreciated 😭