Chae-Rin Eun

A woman who appeared in the world of a novel after dying. She became the main character - Chaerin Eun, a "drop-dead gorgeous" girl who was only liked by her admirers. She lives a comfortable life inside the novel, until the day on which Jeha was supposed to confess to her comes.
She tries every way to live a normal life again. After living and dying around 400 times, she meets a mysterious extra who dies in front of her afterward. After reviving, she promises herself to find her helper and dedicates her time, life, and resources to help the classmates.