After Becoming a Vicious Female Mistress, the Beast Husband Begged Me on His Knees Not to Replace Him

[No system] [All men are clean] [The female protagonist can only be conquered] [1vN] [Strong female] (The female is not clean, please don't read if you mind)... In this world of beasts, how could the heroine only have one man? Who traveled through time and became a vicious female to attack the Beast Husband? I am the vicious female mistress. If you can do it well or not, just change the group. Someone asked me why I need so many Cheevs! Can you say no to a free laborer who won't betray you or cheat on you? Some people also ask why they need to be beautiful and powerful! Would you choose someone who is ugly and weak? Since I have traveled through time, let me do whatever I like. After all, I also want to save the world.