Read manga: Blind Passion

manga
Summary:

"Hyang-ah, you only need me, right? Right?"As a child, Sunok's father bought Hyangi and since then the two girls have been inseparable. Sunok becomes the new princess due to her father and his retainers' wicked schemes and not long after, Hyangi also joins the palace as a court lady...Politics, love, jealousy, and romance are rampant!