The Witch Doctor of Walpurgis

Upbeat witch doctor Kina Witchwood receives an ominous prophecy: she will face her execution in six months, but not before encountering three men--one she cannot refuse, one she cannot persuade, and one to whom she will vow her life. Though she tries to defy fate, she soon finds herself appointed as the emperor's personal physician and thrust into the heart of the imperial palace's trecherous political intrigues.

(Source: WEBTOON)