After Rebirth, I am Sober and Seek Revenge

Born to the Phoenix Clan, Elara and Phoebe are summoned by the Empress to choose their sacred elixirs. Elara, the cherished daughter, seizes the Elixir of Endless Remedies and declares she will wed none but the Beast King, leaving Phoebe bound to the human prince and the Chalice of True Love. The Empress, furious yet unable to refuse her favored child, sends the betrothal scroll and turns her wrath on Phoebe, ordering her to descend with the prince and keep peace among the Three Realms.

Phoebe knows what her sister does not. In a former life, the prince's devotion was a facade; he clipped Elara's wings and harvested her essence in the dungeons, while the Elixir healed the Beast King's broken soul and raised him to enlightenment. Now Elara has chosen that same path for herself, certain she will reign as queen of immortals.

As the carriages are prepared and the Empress demands the Beast King come in person, Phoebe hides her hatred and waits, knowing the beast tribes are far more fearsome than any mortal prison.