Quick Transmigration: I Have a Pure and Innocent System in a Trashy Novel

【Quick Transmigration + Coercion + Yandere + Two Strong Leads + 1v1】 For no apparent reason, Gu Anran is chosen by the Heavenly Dao. From then on, she has a “Pure and Chaste” System, and completing missions earns her rewards?! But can someone please tell her why everyone in this story is so twisted? First world 【Possessive Puppy-Like Disciple × Master Pretending to Be Aloof】 Xiao Wunian has recently realized, to his horror, that after countless erotic dreams, he has fallen in love with his master. What? She's been using him from beginning to end? No matter. He'll lock her up and make her truly repent... Second world 【Cold and Ruthless Emperor × Timid Empress in the Cold Palace】 Di Xuanshen has been cold-hearted since he was in the womb. He never expected that the woman he sent to the cold palace on their wedding night could stir his emotions. What should he do? He only wants to lavish all his affection on her... Third world 【Down-and-Out Young Gentleman × Young Wife-to-Be Who Becomes a Stepmother】 When she opens her eyes, she discovers that her target comes with a child. Tsk, this clean-cut young scholar can really be the protagonist of this ridiculous story? What a surprise... Fourth world 【Male Lead Living Under Someone Else's Roof × Vicious Female Supporting Character】 Damn it, this man is far too good at putting on an act. He looks gentle and obedient on the surface, but who knows how many ways he's thinking up to hurt her. Dangerous. She needs to get as far away as possible. This System is going to be the death of me!