This Background Character is Too Strong [Quick Transmigration]

Kidnapped by a system in her sleep, Yuan Xi is thrust into world after world as a "background character"—except she refuses to fade into the scenery. In a substitute romance, she bankrupts the family that dares threaten her sister. As a crown princess cultivator, she beheads rule-breakers without mercy. Reborn as a sickly heiress, she becomes her grandfather's pride and accidentally the white moonlight of the male lead's parents. And in an omegaverse world, this frigid Beta discovers her harem is harder to manage than expected. One thing's constant: she's never shorter than 180cm, and she's al…