Yandere / Manipulation Smut

Vika has an elder sister blessed with light and known as the White Lily Princess.
She herself has been blessed with darkness and known as the Black Lily Princess, and has lived an unremarkable life.
One day, her father, the king, orders her to make her sister and the Holy Knight

"I'll never let you go -- no matter what it takes or what I have to do, I'll keep you bound to me."
One day, Eva suddenly remembers that she is the villainess of a certain otome game, doomed to a tragic exit.
Despite harboring a faint affection for her fiancé, Ethan, Eva believes

Due to family circumstances, Uzuki is married off to the Kamishiroto family.
A loveless marriage, sex as a chore just to produce an heir.
A heart and body that are not satisfied day by day...
Then, a stone is literally thrown at Uzuki.
"I just wanted you to notice me, even if it

Mei was once a totally ordinary person until she was in an accident that ended her current life and transported her to the world of her favorite Otome game as "May", a villainess.
However, the twist in this game is that there are multiple protagonists, all villainesses!
The idea