An unnamed genius protagonist is heartbroken from a crude breakup with her boyfriend only to die prematurely by saving a child from an oncoming truck. Her death was a mistake in heaven. So she was reincarnated into a different world, but in the body of the Villainess of the world of Shining Hearts. The book that her friend convinced her to read that one time. With the thought of the terrible end that she could in the encounter, she diverts from the original plotline to avoid all the capture targets and the two-faced heroine and live out a successful and long life.