The Soft and Adorable Host was Picked Up by the Yandere Bigshot

Novel Summary
Bai Sang, who only lived for 18 years, died from a heart disease and was bound to a system with the task of seducing the villain.
The villains had tragic life experiences, often physiologically distorted, cruel and heartless, and paranoid by nature.
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Bai Sang transmigrated into the body of a sickly and introverted young lady, and the villain had just recently become her little attendant.
【Seduction Task One: Skin contact with the villain for ten seconds.】
Bai—thin-skinned—Sang’s face flushed, and she didn’t dare to look straight at him. Her voice was warm and soft: “I… Can I hold your hand?”
Evil villain: “Good.”
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Bai Sang transmigrated into an oceanographer, and the villain was a blood-tailed mermaid who had just been caught ashore by her.
【Seduction Task One: Touch the villain’s fishtail for ten seconds.】
Mermaids are cruel by nature, especially the blood-tailed mermaids, who are born to slaughter fiends.
Bai Sang looked pale and her dark eyes tinged with a touch of fear. She half-knelt in front of the mermaid and pitifully spoke: “I… May I touch your tail?”
The corner of the mermaid’s mouth hooked up into a malicious smile: “Yes.”
– Description from Novelupdates