Secret: Female lead takes the blame for killing male lead's girlfriend, ends up falling in love
Empress ki: enter the palace to seek revenge on the emperor who killed her father, reunited with ML falls for first male lead but loses their baby after being chased off a cliff, enters the palace to seek revenge
The Story of Yanxi Palace: enters the palace to find out who killed and violated her sister, falls for the guy she suspected, he marries someone else. The empress who was like her sister dies because she loses another child and the emperor slept with her close friend so she killed herself, FL becomes a concubine to get revenge on those who caused her death
Princess Agents: I dropped this but she witnessed her brother being killed by the ML they fight a lot and she almost kills him a few times, she ends up with the SML for a few years and they go back and forth. I think the writers didn't know who they wanted her to end up with until the end
My Secret Hotel: her boss has a crush on her and she finds him attractive. She was married or engaged to the ML and they broke up. She hates him and starts dating the boss, he claims not to love her anymore but he needs to pretend to his parents that they are still married, they end up falling back in love
