I Became the Villain, But the Heroine's Script Fell Apart!

Zhao Xin wakes up inside a web novel as the disposable villain—his mission? Follow the script, stay low-key, and escape back to reality. Armed with a "Lie Flat" system, he's ready to play his part and fade into obscurity. But there's one problem: the ice-cold heroine is supposed to hate him. Instead, she's turning into a doting, affectionate older sister type who won't leave him alone! As the original plot crumbles around him, Zhao Xin realizes surviving this story might be harder than he thought.