As shown by the childhood incident of accidentally using her newly emerged Quirk on her father, she has even rewind someone's body to a point before they existed, erasing them completely. The source of her Quirk's power is located in the horn on her head, and the size of the horn dictates the strength of her power.
After settling in at U.A. High School, Eri began training her Quirk by using it to restore the limbs of bugs and lizards. Through these months of training, Eri managed to obtain enough control over Rewind to restore Mirio's Quirk, Permeation.
As mentioned by Overhaul, Eri's rewind ability only works on the living, so inanimate objects won't work with her power.
Following an incendiary defeat at Endeavor's hands, All For One resurrected himself with some variant of the Rewind Quirk. Rewind is an incredibly powerful mutant Quirk wielded by Eri, the young former ward of yakuza leader, Overhaul.
1 Shigaraki
All For One is arguably the rarest and most powerful Quirk possessed by any villain in My Hero Academia. This Quirk so thoroughly defines its bearer that he's taken it as his name.
According to Deku's mother, the inherited quirk Deku should've naturally received would've either been his father's quirk, breathing fire, or her own ability to levitate small objects.
Eri, one of the main characters in My Hero Academia, is initially introduced as a 6-year-old in her first appearance. In the current timeline, Eri is a 7-year-old child.
Fans know that his name is Hisashi Midoriya and that his quirk is fire breathing. It's assumed that Hishashi's fire-breathing quirk isn't as eye-catching as Dabi's flames since Inko brushed it off at Izuku's doctor's appointment as a child. Currently, Hisashi's work has taken him abroad, leaving Inko and Izuku alone.
Mirio Togata
He is the first person to give her hope that she could be free of Kai and the Shie Hassaikai. He later invites her to the school festival and holds her in the air for her to see Izuku perform. Since then, the two have become closer, with Mirio becoming an older brother figure for Eri.
Due to her young age, Eri has no control over her Quirk and fears it harming others. It's dangerous power makes it difficult to train, given that it can only be used on living beings. After training with the help of Aizawa, Eri was able to use Rewind with success by practicing on bugs and lizards.
Weaknesses: She has no control over her own Quirk and thus can harm others around her even if they are her allies. She is extremely traumatized by her experiences as Overhaul's prisoner, which can be used to manipulate her.
Eri's Rewind Quirk also requires a huge stockpile of energy, and even if Neito copies it, he wouldn't borrow the saved-up energy, thus her Quirk is also a blank.
So Fairy, Flying and Psychic-types will be effective in beating Eri's Caph Starmobile Revavroom. We also recommend Terastallizing a Pokémon here, or during the previous Annihilape fight to prepare.
There is no official adoption but yeah since Aizawa is training her hence he is more of a Father Figure. He also trains Shinso so he is his first child. So, you may look at the cute fanfics of Eri and Dadzawa.
Unfortunately, after her rescue, Eri still psychologically suffered from Kai's influence, as she was unable to smile due to having no experience of being happy.
7 Eri Kamataki
Eri's birthday falls on the same day as that of her real-life counterpart, April 7th, 1995, making her twenty-four years old during the events of Like a Dragon.
The first person to manifest a Quirk was a newborn baby in the city of Quig Quig, China, who had the ability to emanate light from their body.
Life Force, All For One, One For All, Fa Jin, Gearshift, and the unnamed Luminescence Quirk are the oldest known Quirks in the series.
A character quirk is an unusual feature that sets your character apart from others. Many of the most famous figures in literature have distinctive quirks, from Harry Potter's lightning scar to Hercule Poirot's mind-blowing detective abilities.