The Villainess Falls for the Notorious Noble
Truck-kun isekais our girl into an otome villainess, and despite befriending the OG FL, the OG ML - the first prince - annules their engagement. So she ends up with the infamous fourth prince (Len) instead, who turns out to be a very nice guy, contrary to the rumours surrounding him.
The Secret of the Friendly Duke
Very promising! Quick synopsis: Young girl becomes the step daughter of a discount, but is treated poorly after her mother dies. She overheard her dad telling an attendant that he plans to keep her as a concubine of sorts when she grows up, and runs to find her friend who's visiting the mansion to ask for his assistance.
I Worked Myself to Death and Reincarnated as the Queen of His Majesty, Who is Younger than Me!
Girl worked herself to death, transmigrates into wife of king (or crown Prince, idk) who is aware that she has transmigrated. He's kinda shitty. But. Whatever.
I’ll Just Live on as a Villainess
This is fantastic. Isekaid villainess breaks off engagement w crown Prince and moves to a cold country she makes a contract w a demon to light some un-combustable wood and she slowly unintentionally fixes her image as villainess
Crows like Shiny Things
Captain of small army wins a 37 year war for her country, crown Prince gains interest in her. It's alright
I'll Be The Matriarch In This Life
Pretty good! A girl goes back in time after betting involved in a carriage accident. She works to become the next family heir
The Flower Dances and the Wind Sings
A woman treats her son like shit because she has postnatal depression, and no one helps her while she has fragile mental health. The year her son turns 18, she travels back in time three years and tries to engage more with her son. This manhwa is a lil depressing so approach with caution.
Duke's Private Tutor
Gay tutor tutors kid, has relations with kids older brother, the duke. It's pretty good, but the second hand embarrassment towards the start was intense
Endo and Kobayashi’s Live Commentary on the Villainess
So, a villainess in an otome game is actually just a misunderstood tsundere. A pair of real game commentators decide to commentate this particular otome game, when they discover they can communicate like gods to the crown Prince in the game. They try to guide everyone to a happy ending this way whilst minding their own relationship outside of playing the game, but (although this is just speculation) it seems like the characters in the game are having intrusive thoughts similar to those of their original programmed characters
I Want to Be You, Just For A Day Webtoon