Eri

Eri is a major supporting character in My Hero Academia, recognizable by her bluish-white hair, red eyes, and a small horn on her forehead. For years, she was held captive and cruelly experimented on by the villain Overhaul due to her incredibly rare and dangerous Quirk, Rewind, which allows her to revert a living body back to a previous state—capable of healing injuries or completely erasing a person's existence. After a high-stakes rescue mission led by Izuku Midoriya and Mirio Togata, she is placed under the care of U.A. High School, where she slowly overcomes her deep psychological trauma, learns to control her powers, and finally experiences the joy of a normal childhood.