Academy City. A magical city with a population of 2.3 million, filled with countless individuals possessing extraordinary abilities. Standing at the pinnacle of that city are true monsters. The first, Accelerator. The pinnacle of existence, possessing the strongest and most evil ability to truly control the direction of all energy, the strongest and most all-powerful monster in Academy City. He will face encounters with countless worlds that transcend time and dimensions. This is a world where countless imaginative beings converge, a world of magic, a world of technology, and all sorts of people and things will mingle within it. And then, the first will experience all of this firsthand. "—Interesting, then let me see how your so-called justice actually works, heroes?" Accelerator, who has degraded himself to a villain, the most vicious and evil anti-hero, what kind of encounters will he encounter on this journey beyond dimensions? The strongest and most evil one-way dark hero awakens here. A crossover anime/manga fanfiction, the protagonist is Accelerator from the original work, striving to recreate the feel of the original A Certain Magical Index.

What bad luck! I choked to death after drinking a sip of warm water and traveled to this upside-down world!

What is upside down? It means that in a world where women are the mainstream, the attributes of men and women are reversed!

He thought he would live an ordinary life, but on the day of his high school graduation, a thing called the Sprite took him to a dimensional chat world that connected the heavens, changing his original life trajectory.

Yan Shuangying: How can someone like you change...

Xiao Yan: Thirty years on the east side of the river, thirty years on the west side of the river...

Spider-girl Shiraori: I...I...

Komon Ikki: Light is a bond...

Aqua: Hahahaha…

Kato Megumi: Oh my, I didn't expect that my presence is still so low here, I am inaction...

Ye Wuwei: ...The introduction is weak, please read the main text!

Time travel happens every year, and this year it's my turn.

There are infinite worlds, and there are infinite me!

Link in the world of Jackie Chan Adventures: "Since the black and positive energies can balance the combat power, when the black energy camp is dead, I can occupy all the black energy, right?"

Link in the world of One Piece: "As a marine, it's so easy to get promoted. I can make achievements along the way with Luffy. When I catch Kaido, I will be promoted directly to admiral!"

Link in the world of Hunter x Hunter: "A bunch of stinky brothers, do you understand the value of Angewomon as a mind beast!"

In Naruto, in One Punch Man, in Marvel, in Dragon Ball...

I just want to rely on myself to become the strongest in the world!

[Naruto + Multiverse] A pair of Sharingan eyes mutated by the soul of a transmigrator will eventually reflect the Love Clan standing tall across countless worlds. "Just wait until I pull out my Spark Lens, then you'll know you've regretted it!" "War God Susanoo - WarGreymon!"

The protagonist travels to Uncle Nine's world and joins a chat group. It's just that the members are all little brats: the beast-milk-loving Emperor Desolate, Kanna, the dragon maid from the Krillin family! Magical Girl Sakura, Nezha the Magic Pill, Tushan Susu, Haibara Ai (??? Is this considered a cub???), Xiaoyu from Jackie Chan's Adventures, and Son Goku from Dragon Ball...

The world of mutual understanding is the most ridiculous.

The peace of infinite dreams is the most hypocritical.

Darkness, cold-bloodedness and cruelty are the truest portrayal of this world!

So, you wanna dance too!?

After unlocking the dimensional star map through modules, allowing him to travel to countless worlds, he decided to completely change his gameplay. He would bring love and peace to each world, and then bring back all the resources, technology, and even all the beautiful girls from each world to his own. There were beast-eared superheroes from Terra, Strike Witches soaring through the skies, all-powerful angels from Cyprus, students from Giwotos, and all sorts of otherworldly races. Wait, why are there also Iron Witches, Goblin Dens, and Hypnotic Guidance—all these strange things?!

When Lin Mo woke up, she found herself transported to the world of "Puella Magi Madoka Magica".

The only cheat code was the game that mutated due to the time travel—it became a mysterious system that could load "character templates".

[Initial Character: Madoka Kaname (Magical Girl) Kyubey]