After I Transmigrated into a Book, I Became the Sickly Demon Venerable's White Moonlight

After transmigrating into a book, Yin Li became the villain. To save herself, she decided to cling to the thigh of Su Wang, the sickly and obsessive Demon Venerable.

To her surprise, he turned out to be her lover from a previous life.

Su Wang: "A Li, I've been waiting for you for a long time."

Yin Li: "..."

What was going on? Had she transmigrated into the wrong book?