The youngest princess, Madelaine, has been mistreated since childhood. One day, her half-brother—the crown prince—orders her to marry Alan Noshutat, the infamous “upstart viscount.” It is a loveless political marriage: the royal family wants his wealth, and the viscount’s house seeks... https://www.cmoa.jp/title/286763/

"I will become a magnificent villainess, worthy of serving the demons!" Robbed of her holy power by her stepsister and exiled from her home, Amelia finds herself at the brink of despair until she encounters Regulus, the Demon King who rules the forest. Transformed into a member of the demon race by Regulus's curse, Amelia resolves to live out her life as a villainess. There's just one problem, she has absolutely zero talent for being evil! Every "wicked deed" she attempts miraculously backfires into an act of good. When she enrolls in the Imperial Academy under the guise of villainy training, she somehow ends up being hailed as the "Great Saint"?! She just wants to be a proper villainess, so how did it come to this? A slapstick school fantasy full of endless misunderstandings! [Original Webtoon](https://jumptoon.com/series/JT00041/)

Five popular short stories from "Shosetsuka ni Narou" have been adapted into manga! From defeating dragons with one punch to being worked to the bone in a rut country... these saintesses are still banished! But even so, I will be happy! (Source: Kadokawa, translated)