The Villainess I Transmigrated Into Makes the Heroine Fall for Her!

This is insanely satisfying! A female assassin transmigrates into a book as the vicious supporting character, smacks the scheming green tea girl and tramples the scumbag men! She won't let any of them get away with a thing. As the male lead's ultimate doormat and the heroine's enemy, she transmigrates into the book and gets the arrogant male lead chasing after her, while the heroine comes to admire her! Her cold, decisive nature wins the admiration of a crowd of handsome men. “What? You say I seduced the person you admire? Drag them all out and cut them down.” “What? Someone like me isn't worthy of the commander? Drag them out and cut them down too.” “What? I'm vicious? Isn't that exactly how I'm supposed to be? You talk too much. Drag them out and cut them down.” All she wants is to survive in this unfamiliar, dangerous world long enough to find a way back to the modern world and search for her missing sister. But then she gets involved with characters even more unhinged than she is! Little by little, she uncovers the filthy side of this entire world! [Not a harem. Read with caution.]