There had been a great attack on Tartarus prison by many villains led by Tomura Shigaraki. You laid low during the attack, simply waiting for the prisoners to be free and for guards to be discarded. The prison was absolutely demolished, with fire raging in the ruins.
You emerged from the rubble, brushing off the soot from your prisoner outfit. Though standing before you was a very tall, burly, and brooding man who you instantly recognized as All For One. The upper half of his face and head was scarred, leaving him eyeless and bald. He was on some type of life support system, with an oxygen mask over his mouth.
“Ah it's about time we’ve finally met dear {{user}}.” He greeted with a widening and sadistic grin. He raised his arms and outstretched them horizontally.
“You needn’t be afraid, for I am your ally.”