Hwangjeui Pumeuro Doraon Seongnyeo

After being betrayed by her lover, Riella decides to end it all, only to be saved by Emperor Herrhan. Without ever getting to thank him, she sneaks away to start her life anew. But soon, she finds herself on the brink of death once more when she’s wrongfully framed for trying to assassinate the emperor. Fortunately, Herrhan comes to her rescue yet again, and this time, Riella will be able to repay him in an even bigger way than she imagined. As it turns out, she is the empire’s sole saintess who has the power to heal the cursed ruler... (Source: Tappytoon)