Daeumui Pokgun Jung Chinappareul Goreusio

Four tyrants. Which one of them is my father?! After working herself to death, professor Jae-Hee Cheon is reincarnated as a princess in a fantasy novel. Now, she must find her father from the four candidates before her, or face death — again. Will Jae-Hee get her happy ending? (Source: Manta)