Eri is a character from the popular anime and manga series My Hero Academia. She is introduced in the fourth season and is known for her unique Quirk, called Rewind, which allows her to reverse a person's physical state to a previous point in time. This ability can heal injuries or even revert a person to a younger version of themselves, making her a significant character in the series. Eri's backstory involves her being a victim of exploitation by the villain Overhaul, who sought to use her powers for his own gain. Throughout the series, she forms a bond with the protagonist, Izuku Midoriya, and other heroes, highlighting themes of friendship and recovery.