Responses
Eri's quirk isn't literal time travel. Eri's quirk works for normal quirks as they are organic to the host's body, Mirio had an outside substance remove his quirk, so regressing to before that substance was in his system is what Eri did. but OFA is a quirk that is passed on and not native to the body. therefore it cannot give OFA back to deku
Can't Eri use her rewind quirk to bring OFA Midoriya back? How is this even ending after only 2 more chapters??