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.

This is a single-female-lead story, not a time-travel/invincible tale. Please stop bringing up the early camera thing! The protagonist isn't a time traveler! She's not that close to Misaka Mikoto at the beginning; that plot point will be resolved around chapter 170!

Accelerator: I am the strongest.

Touma Kamijou: Ever since the new neighbors moved in upstairs, I feel like there are more and more things happening around me.

Misaka Mikoto: I'll definitely beat him next time.

Shirai Kuroko: That guy who looks like a mountain, my dear older sister would never like him.

Teacher Xiaomeng: That child? He's really a headache.

Zero: I just want a peaceful campus life. I don't want to cause trouble, but trouble has come knocking on my door. Shouldn't I clean up this mess?

It's a marriage arrangement; apologies to the brothers who stumbled upon this.

[Getting Married] [Fun] [Humorous] [Daily Life] [Drama Queen] [Oops, I've Become the Main Wife] [Script Collapse] [Dual-Core Driven (Tentative)] [Challenge]

I am Chiin Hououin, a transmigrator. Originally, I planned to cling to Shido's coattails and provide crucial support, then become a lowly employee at Fraxinus and live a life of leisure. However, in the year the main story begins, I was targeted by Aha, who gave me the power to transform into a Herrscher. After assimilation into the world, I became a spirit who wields Herrscher abilities.

As for what happens next? Hmm... let's stick to the old plan and give Shido an assist, shall we? He can't possibly try to seduce me, can he?