WARNING: The following contains spoilers for My Hero Academia Chapter #292 “Threads of Hope,” by Kohei Horikoshi, Caleb Cook and John Hunt, available now from Viz Media.
Having been out of commission for some time, Lemillion is back on the battlefield in Chapter #292 of My Hero Academia and, even more surprising, he has full control of his Quirk again! His reintroduction is done in a typically comedic, yet powerful fashion -- leave it to Mirio Togata to come to Deku’s aid right when he can no longer move his limbs or muster the strength to fight anymore.
But although Lemillion’s entrance reignites hope for the heroes as the League of Villains begins to dominate them in the manga's current "War" arc, it creates a potential problem for the very person who likely restored him to fighting shape.
Lemillion’s late-game entrance means that Eri has probably utilized her Quirk to restore Mirio’s powers by reverting his body back in time. Eri’s powers were last used when Deku teamed up with the one-horned-bundle-of-fear against the villain Overhaul. Since then, Eri has been in the care of Eraser Head and Mirio. The plan was always employing Eri's Quirk to return Mirio’s lost powers, but at the time of her rescue from Overhaul's clutches, she was still incredibly fragile. So instead, they focused on healing the scars Overhaul left on her, while slowly introducing her to the real world he kept her hidden from.
Since Eri has probably developed a way to utilize her Quirk, that also means that she may be able to help the other heroes who have been gravely injured in the battle against Shigaraki and the League of Villains so far. The limits of her Quirk are still unknown, but it does leave hope for those that have severe injuries like Mirko and Eraser Head. The next person in line to be saved could be Eraser Head since he does have an established relationship with Eri. The full truth behind her skills will probably be explored in the coming chapters.
Eri’s power changes everything in the story because it softens the threat of the Quirk-canceling drug that Shigaraki stole from Overhaul. Sure, if Eri was to get hit by the drug, then she’d lose her abilities to save the others, but knowing now that she has some control over her Quirk must mean that Eri is under some heavy security. Regardless of her abilities, Eri has now become a great asset for the heroes, but also an important target for the Villains.
In truth, Eri has always had a target on her back since her rescue from Overhaul, but now that her Quirk is active, Shigaraki might want to take advantage of her skills to develop a new drug. The options are limitless.
No matter how the current battle ends, one thing is sure, Eri is going to have to learn to take care of herself if she doesn’t want to be a burden to anyone. With the current roster of heroes on the brink of losing their edge entirely, the next generation is going to have to rise up and be the new hope for the world. It’s a tough task, but it’s nothing the young heroes from U.A. can’t handle.