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.

Past, present, future, and destiny. These form the foundation of the world and represent the power of the present. The past is eternal, representing unchanging power. The present is the era, representing the strongest power. The future is potential, representing infinitely powerful yet infinitely weak power. Chosen by the past, one becomes the master of the unchanging. Chosen by the present, one becomes the king of the era. Chosen by the future, one becomes the emperor of the end and the emperor of hope. Chosen by destiny, one becomes the emperor of fate! The chosen youth ultimately embarks on the path planned by destiny. Not wanting to be bound by fate, he continues forward. If humanity cannot achieve this, then he will become a stronger being, until he becomes an ultimate existence that even gods cannot look directly at. The world is finite, but dimensions are infinite. Continuous battles lead to becoming the ultimate being. Becoming the master of destiny! The female lead is Yae Sakura (?ω*?). Worldline: Akame ga Kill! → Fourth Holy Grail War → Godslayer → Dragon Clan → Problem Child [First two volumes are for beginners, poor quality]