Young Erich’s quest for an invincible character build will require more than his decades as a number-crunching munchkin, though. Even with power-leveled skills, feudal life is no cakewalk—especially when you keep drawing more attention than you can handle. Can Erich adapt to his strange new world before his worst impulses take the campaign of a lifetime completely off the rails?

Life’s tough when you’re trapped in an eight-year-old body on another world. His name is Eight. Not really, but that’s what the System decided after a slip of the tongue. One moment, he was stepping out the office door on the way home, and the next waking up on a hillside below a town wall. Oh, and the gate guard drove him off, because he thought Eight was a monster. What’s a boy to do in a world full of magic and so many, many hungry creatures searching for their next meal? Well, there’s an old man inside that body, and he'll use everything he’s learned to survive.

Fight, survive, adapt, and rely only on yourself. That is Derek’s creed and what's got him through the System Integration on Earth. Everything changed when the System came. Cute bunnies and beautiful butterflies became savage killing machines. Then the Invaders arrived with a single goal: to obtain ownership of this new habitable planet. War has raged ever since. None of this mattered much to Derek, aside from making living a little more perilous.

E-rank hunter Jinwoo Sung has no money, no talent, and no prospects to speak of - and apparently, no luck, either! When he enters a hidden double dungeon one fateful day, he’s abandoned by his party and left to die at the hands of some of the most horrific monsters he’s ever encountered.

In a former life, Jack was gifted, meaning he possessed peculiar abilities. If rich folks found themselves in a jam, Jack could use his talents to get them out of it. Where others were sure to fail, Jack's aristocratic clientele could always count on him to finish jobs cleanly, efficiently, and leave no trace, for which his services commanded a hefty fee. But one day, Jack picked a fight with the wrong man and his old life came to an end. But, as it turned out, his story was far from over.