Imagine (M. Yanderes x F. Reader)

After being dropped off into the familiar world of Y/N's favorite novel, she can finally escape normal life.

She keeps in mind that she is there to help the female lead, and her adopted sister, Cassandra, and is going to give her a gentle push in the direction of the right male lead for her.

Y/N soon figures out that things are far different from the novel... and Cassandra isn't really the lead...