Marvel's Shadow Assassin

"We gain faith from the creed. We cultivate the altar in darkness and bring light to the darkness. We are assassins. Everything is false, and everything is permitted."

The Brotherhood is above all rules, including those of the Divine Realm, the Time Administration, and the Observers.

Jack Edward wakes up in this world and tries hard to catch the Black Hand of the Knights Templar. Here, he is Captain America's comrade-in-arms, Black Widow's teacher, and Dracula's number one enemy. Famous organizations such as the Hand, the Order, and Hydra are all defeated by him.

Even the sins and punishments of the Dark Book can only imprison him for sixty years. After sixty years, the Ripper, who holds the power of original sin, will rule the world again.

(Although this is a fanfiction, this book respects the original work and will not mess with it.)