The story of the original manga begins when a girl named Emi uses a pencil that can grant any wish. Emi gets caught up in the robbery of a convenience store, and her life is in danger. She uses the pencil to wish for a "hero that will save everyone." Four heroes appear in response to Emi's wish to change the course of the future. The anime will have a different story from the original manga.

(Source: Anime News Network)