Love the idea of the past users of OFA being protective of Deku. It’s implied that All Might and Deku got OFA around the same time. But Dekus still so much more vulnerable due to how volatile and self destructive the quirk is for him. He’s been through hell and still went through some hell at UA but he still comes out the other end kind and compassionate and they’re watching this kid with obvious self esteem issues continuously destroy himself for the sake of others and it’s frankly terrifying.
It would explain why the past users manifest and show themselves to him in a way they’ve never done with other past users. You get to see them interacting with Deku in real time in the recent manga so the idea that they could sort of override Dekus consciousness in his moments of physical and mental exhaustion (Avatar state style) is sort of possible. And they’re not just protective of Deku against villains. They get angry on his behalf towards people who’ve hurt him. So you’ve got Bakugo being an ass one time too many and suddenly Dekus covered in green static with glowing eyes but when he speaks, that’s not his voice. It’s sounds like several people talking at once burning with fury and venom towards people who should have noticed earlier how close Deku is to the brink. All his quirks manifest at once and suddenly he’s floating with black whip emanating from him like a crackling twisted limbs. Fa Jin collects kinetic energy from every move he makes till it looks like the force of it is threatening to explode out of him. Smoke from the Sixths Quirk surrounds him with a fog that hides him from sight, invisible if not for the hissing bursts of pure manifested energy piercing through like strikes of lightning.








