For the ask game: AU where, since All for One is kinda hard to kill, the One for All holders decide to murder his villain reputation first.
Ok, time to finish the rest of these before I go get groceries
1- Of course it always has to start with Yoichi. He knew exactly how hard his brother is to kill, as he's been trying to kill him ever since they were children. His brother just never realized it and thought all of the attempts to bite his throat out were a sign of brotherly affection. So he tells Second and Third that if they're finding difficulties, to instead find a way to kill his reputation in some fashion.
2- Unfortunately, Second and Third thought the traditional method of trying to straight up kill All for One was better in the long run. While Hikage was happy to remain as a hermit; but Banjo decided he would follow with Yoichi's wishes! Luckily for Banjo, his family actually owns the copyright for Captain Hero and the Demon King and they had kept producing some kind of content to continue renewing it. So Banjo first decided to completely destroy the Demon King as a character by giving him a redemption arc through the Power of Love and Friendship.
3- When it was En's turn, he decided to find ways to break into All for One's bases. He didn't steal anything, instead going to where the villain's suits are laundered and proceeded to add bleach to turn them all white. He then left instructions for his successor on the best way to break into the laundry room; this is how Nana dyed all of All for One's suits pink.
4- All Might kind of fell more in line with Second and Third and thought it was better to just straight up kill the guy. He actually got the closest to killing All for One, which actually helped with destroying his reputation further because he was defeated by a man who themed himself off of America of all places.
5- Yoichi finally got in contact with Izuku after Izuku got One for All and urged him to find a way to destroy All for One beyond repair. Izuku decides on a multilevel plan to do just that. First he steals AfO's bank information, including all of his shell companies, and donates every last penny to charity. Then he throws out the name "Deku" and claims the name "All for One" and registers it under copyright law.
As soon as All for One appears at Kamino claiming the name "All for One" he is immediately pulled into Judge Abe's court.
@aimportantdragoncollector can tell you how that trial ends