A big crossover fan fiction combining works such as A Certain Magical Index, A Certain Scientific Railgun, Assassin's Creed, alternate history, The Elder Scrolls, and Fate. This is not an infinite-world story, nor is the protagonist invincible. All the works share a unified world, and everyone exists in the same dimension. So if you happen to see Fate battling A Certain Magical Index in this story one day, don't be surprised.
P.S. The novel's Tieba forum is called A Certain Scientific Ancient Creed.
This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.
