The Allen Walker Incident

I'LL UPDATE SOON, YOU CAN KILL ME LATER! When Allen was helping putting boxes away, that carries what Komui had made, he fell, and inhaled one of the potions. He was de-aged a week before Mana died, and, when he remembers that he did, and gets his scar, and going into shock for a month, just like he did before, except at the Black Order.