Takane to Hana
The Monster Duchess and Contract Princess
leslie tries to be adopted by a powerful duchess to escape from an abusive family,
Inso's Law Webtoon
dan-i wakes up in an alternate universe where she thinks she’s the best friend of the main character. yeoryeong, the main character, is lowkey in love and possessive of dan-i. 2 of the boys, chunyoung and eun jiho are also seemingly in love with dan-i novel: https://wuxiaworld.site/novel/the-law-of-webnovels-novel/ raw: https://rawdevart.com/comic/insos-law/
Light & Shadow
edna was born female but disguised herself as male, to become the heir of the throne. before she could, there was a rebellion that she had to escape. she gets captured as a maid and later gets replaced to marry the "human butcher", the head knight of the new king. they do fall in love really quickly though
Golden Time (Ryu Hyang)
a sequel to light and shadow following edna and eli's son, alex. Jessica, the princess of another country comes with her older sister to be marriage canidates for alex
The Evil Lady Will Change
aisha is the eldest daughter of a noble family, but is less favored due to her evil powers and more reserved nature. When her sister, Lillian, refuses to marry a prince of a neighboring country, aisha goes instead. the prince is rumored to be very scary and cold
Otome Game no Hametsu Flag shika nai Akuyaku Reijou ni Tensei shite shimatta...
katrina hits her head and regains memories of her previous life. she was an otaku who played otome games and ended up being reincarinated as the villain. she goes through trying to change all the paths so it does not lead to her death. she ends up getting a harem of both men and women, including male leads, female lead, female love rivals
I Reincarnated into an Otome Game as a Villainess With Only Destruction Flags... In a Dire Situation!? Verge of Destruction Arc
spin off to the other version. katrina hits her head when she's 15 instead of 8 so she only has less than a year to change the outcome of the game
I’m a Villainous Daughter, so I’m going to keep the Last Boss
aileen remembers that she was the villain in a game she played and is on route to change it. she meets the demon king and attempts to get him to fall in love with her before the heroine can. the heroine also remembers the route and is kinda evil
Wicked Young Master's Forceful Love: Training the Runaway Wife