A certain supreme magician once said: A supreme magician doesn't need to become the strongest. They just need to make the strongest being their familiar.
Zenin Isshin wholeheartedly agreed. Why should a sorcerer have to charge in and trade punches with people every time? Sure, he could hold his own in a fight, but he'd much rather watch from his wheelchair than risk his life brawling with someone. So, whenever he was working for the Lord God and sent to another world on assignment, if he encountered an enemy who might be stronger than him, Zenin Isshin would empty his mind and summon his strongest familiar, his wheelchair, to fight in his place.
"Help me, Mahoraga!"
(An infinite-flow story with Jujutsu Kaisen as its main world, inspired by the new Jujutsu Kaisen manga and the third season of the anime.)