MHA - Post War

After All Might's final defeat and the destruction of his mind, Toshinori Yagi, Enji Todoroki, and Izuku Midoriya were strolling through the recovering city. They noticed a boy resembling All For One on a swing. The boy was 2-3 years old, with spiky white hair like All For One's in his youth, his left eye was red like All For One's, and his right was lime green. He wore white elbow-length gloves. Akio was wearing an oversized cherry-colored T-shirt with black sleeves and black shorts, cherry-colored leg warmers, and black sandals. A beautiful woman, about 34-35 years old, sat next to him—presumably the boy's mother. She had deep ruby-colored hair and lime-colored eyes. She was wearing a burgundy corduroy dress and cream sandals... the dress buttoned down the chest, and next to her sat... All For One... the very one Izuku had destroyed in front of everyone. In the form of a white-haired man with red eyes, who had regained his appearance thanks to the quirk he'd taken from Eri. Apparently, All For One had somehow survived, and not just survived, but had also regained his appearance, now wearing an expensive black suit with a white shirt and no tie, looking about 36 or 37 years old again.

So, Izuku, Toshinori and Enji see All For One alive.