Damn It! The Villainess Wants to Kill Them All!

[Unconventional Cultivation + Villainess Lead + Fussy Heiress + Strong Female Lead + Romance Optional + Meme Humor + No-Brainpower Power Fantasy + Face-Slapping + System + Scheming + Light Comedy + No Hostile Female Rivalry]

Yu Yi transmigrates into a book. The moment she opens her eyes, she realizes she's become the vicious side character in an erotic novel.

The kind who gets her cultivation stolen in a matter of minutes!

Good grief...

System: Host, how about we bring out a Holy Grail?

Yu Yi: I'm not Diao Chan, so why would I bring out a Holy Grail!

Facing her idiot master: I examine myself three times a day. And in the end, I realize I did nothing wrong!

Facing her lovesick junior brother: Listen to your senior sister. Find one true love and spare yourself a lifetime of heartache.

Facing her delicate junior sister: Pure love is for children. At your age, you can have so much more.

Facing the aloof Buddhist monk: I won't listen, I won't listen. The little monk's chanting, whatever he's saying, I don't want to hear it!

Facing the young master of the demon realm: A woman's heart is as deep as the sea. Don't even try to win mine, young man.

Facing the brooding Demon Lord: Balala the Fairies, summon the Great Dark Demon God...

Facing the lord of the Hehuan Palace: I used to think of you as a dear friend, brother. Now I see that I'm hardly the only sister you call a friend.

Facing the prodigy of the Yin-Yang Sect: Huh? When it comes to being trash, who can outdo whom? You cheap man!

Content warning: The heroine isn't exactly well-mannered. Don't read if that's not your thing.

Not all the male characters above are love interests for the heroine.