The Poor Girl He Bullied Was His Lost Sister

This is the kind of guilty-pleasure serial that knows exactly what it is. On the surface this is a Family / Misunderstanding serial, but underneath it is a story about money, pride and stubborn hearts — and "The Poor Girl He Bullied Was His Lost Sister" plays both layers for all they are worth.

A kidnapping split two billionaire siblings eighteen years ago; the brave sister lured the kidnappers away, lost her memory, and grew up in the slums. Fate reunites them at the family hotel — she is staff, he is the untouchable heir — and his vicious fiancée frames her into a hatred he performs ruthlessly. The show is the slow horror of cruelty aimed at the wrong person, and the title promises the devastation of the finding out.

Tropes on the menu: lost child, billionaire. Episodes are bite-sized, the cliffhangers are ruthless, and the payoff lands faster than most full-length shows manage in a season.