The Duke's Servant
The Earl's Daughter was Suddenly Employed as the Crown Prince's Fiancée
MC cursed to "repel" women, turns out to be due to sexual trauma as a child. Female mc is the only "woman" who isn't repelled so she is ordered to be his fake fiancee.
Though I May Be a Villainess, I'll Show You I Can Obtain Happiness!
Anthology of villainesses turning their fates around themselves (not actually a villainess).
Virtues of the Villainess
Breaking of the 4th wall w/ villainess reading a novel about the heroine's love story and trying to change her fate by catching the male lead's eye herself.
Amina of the Lamp
Not isekai, harem, or reincarnation. Female mc is a mage that accidentally transforms herself into a magical construct and becomes a "genie."
The Holy Grail of Eris
Villainess's ghost came back and asked vicount's daughter for help in solving who framed her and led to her execution. Also, the mysterious suicide of her friend who she suspects was murdered.
Remarried Empress