From Tapas:
(Ahhh, how did I get here?!) Okay, Athy, breathe. You’ve been reincarnated into a young princess (What?!), and your palace has so much chocolate! (Okay, that’s cool.) And you read this book in your past life, so you know how the story goes (Yeah!). I mean, sure, your terrifying father (The emperor?) is supposed to murder you on your eighteenth birthday. (Ugh, that sucks.) and when your half-sister, Jennette, shows up, he likes her better (Jerk.). But c’mon, can he really resist this adorable face?

Original Web Novel:
Naver Series, KakaoPage, Ridibooks

Official Translations:
English

Note: The old and new (current) versions of the novel differ.