Academy City.
A mysterious city with a population of 2.3 million, teeming with countless people who possess strange abilities.
At its pinnacle stands a true monster.
Number One, Accelerator.
The most powerful and most evil being at the top, with an ability that can truly control the direction of all energy. The strongest in Academy City, a monster who reigns over everything.
He will encounter countless worlds beyond time and space, and beyond dimensions.
This is a world where all manner of fantastical beings converge. There are worlds of magic, worlds of technology, and all kinds of people and things mixed together.
And Number One will experience it all firsthand.
"Well, this sounds interesting. Why don't you let me see how this so-called justice of yours works, heroes?"
Having branded himself a villain and become the most vicious and evil antihero, what kind of encounters await Accelerator on this journey beyond the dimensions?
The strongest and most evil one-way dark hero awakens here.
A crossover multiverse fanfiction starring the original Accelerator, aiming to recapture the feel of the original A Certain Magical Index.
