Regressor Instruction Manual - Chapter 725: Experiment (1)

Raven Astral, a reclusive billionaire known for his unmatched intellect and business sense, finds his world shattered when his beloved younger brother, Weiss, disappears without a trace.

Determined to save his brother, he enters the world of “Hellfire,” an unprecedented and highly immersive game-like world that was also known as the Graveyard of Gods.

Endowed with immense wealth, Raven embarks on an audacious journey into the heart of Hellfire, setting him apart as the wealthiest player to grace the world of Hellfire.

And so, the odyssey of the Wealthiest Ranker commenced—a journey seeped in searing flames of vengeance that would turn the entire realm upside down, reshaping the destiny of all who dwelled within its formidable borders.

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Being in the World of Arknights...Thing's are going to change drastically and...You best be ready for what's to come ahead.

I am serious about saving people, I am professional in protecting people, and I like hunting for treasures. . . .

Emergency doctor Lu Fei was forced to travel to a small town in the United States in a parallel universe, got the rescue system, and became a legal mercenary by chance.

As a real man, you must always cut open people’s bodies to save people from danger; you must often fight and kill, and use thunderbolt methods with compassion!

- Description from novelbuddy

Lieutenant Jack Fritz is a self centered American man of German descent. He like many joined the United States Navy in hopes of getting an easy life and easy money. In fact getting money and taking it easy is all he has ever really wished for in life.However life seems to have other plans in-store for Jack as he suddenly finds himself at the beginning of World War 3. Though his fight does not last for long as he is suddenly blown to bits by a missile and sent into the afterlife, but instead of going to heaven Jack is dragged to another place where he is given another chance at life by some fiery demon for a price.Having been given no other chance Jack does as the demon says and earns himself life again. Though he doesn't return to his original world, but a medieval one. With no guidance and no higher purpose given to him he simply decides to do the best that he can within this new world of his. This time he will for sure earn that perfect life of his and possibly a lot more.But little does Jack know his fate is not his own and there are many sinister things in-store for him. Also the world he finds himself in is not a safe or simple medieval world, but one beset by dangers from all sides that are already little by little driving humanity towards its extinction.