Of course, a lot of the romance manga these days comes in the form of light-novel adaptations, which are often just as much about the self-improvement of the heroine as it is about her getting dumped by a crappy prince only to pick up a better one on the rebound.
THE TOO-PERFECT SAINT: TOSSED ASIDE BY MY FIANCE AND SOLD TO ANOTHER KINGDOM (Kanpeki Sugite Kawaige ga Nai to Konyaku Haki Sareta Seijo wa Ringoku ni Urareru), based on the light novels by Fuyutsuki Koki and character designs by Masami, with art by Mago Ayakita. First published in 2021 and first published in North America in 2025.
PLOT:
Philia is the finest saint Girtonia has ever known. She's powerful enough to purge the land of monsters, summon rain, and develop new medicines all on her own, but she's seen as aloof and even arrogant because she never shows any outward emotion. That includes her demanding, emotionally abusive parents and her bratty, deeply insecure fiancé Prince Julius. He's so selfish and insecure that he sells her off to the neighboring kingdom of Parnacorta, exiling her overnight in the hope that he can marry her younger, sunnier sister Mia instead.
As Philia gets used to her friendlier new homeland, Mia takes it upon herself to find out what happened to her sister and to take down all the people responsible for her beloved sister's fate.