I, the Vicious Supporting Lady, Picked Up the Villain as a Slave

The max-level expert Bei Cha transmigrates into a book as the vicious supporting female character: spoiled and arrogant, born into a good family but lacking any ability, obsessed with the male lead, and doomed to offend the female lead and be exiled to the depths of hell. Bei Cha tosses the knife in her hand. Then I'll go with the flamboyant, arrogant seductress route. Fighting and killing is too exhausting. "Have you heard? The gold and jewels guarded by the shark clan in the Endless Sea were stolen!" Bei Cha: "..." It was me. "Have you heard? The jackal clan actually recognized a female as their king!" Bei Cha: "..." That was me. "Have you heard? The evil dragon that invaded the Dark Forest was defeated by a female!" Bei Cha: "..." That was me too. "Have you heard? That fallen noble was caught fooling around with a slave. Aren't they afraid of catching some disease?" Bei Cha: "..." That was me too. She glances at the future villain, who will one day dominate the world, whom she picked up from a slave den. Right now, he is obediently massaging her shoulders and legs. This is great~ Later, she picks up another slave and says to the villain, "He can help you from now on, so you won't have to work so hard." The villain obediently replies, "Okay. I'll take good care of him." Bei Cha pats the villain's little head. He's so obedient and sweet. Looks like you can't believe everything you read in a book. Then one night, she sees the villain, eyes red, dragging the slave she just brought home into the dungeon in chains. The next day, he stands by her side as obediently as ever. His big eyes are full of anxiety. "I don't know where he went. B-but he's only a slave. If... if he ran away, please don't hold it against him, okay?" Bei Cha: "..." She wonders whose knife is faster, hers or the villain's. #Fine, I get it. Yours is faster. Please, put down the chains. I won't fight back :-(# #The master should be good and obedient.# This is the story of a heroine who conquers all directions and leads the hero down the path of growing up into a pervert. Theme: Yanderes are so very charming