In the Prime Kingdoms, the system dominates everything. It dictates one’s strength, skills, and power. It spawns dungeons and guides the actions of their monsters. But every system has its limits, and it’s about to push four oddball adventurers to theirs.

Max wanted to be a [Baker]. Settle down, bake stuff, and enjoy life. The gods, however, ruined that dream. Given [Baker] and a rare black skill, he is now running for his life, trying to grow strong enough to return home. Now, Max must find a way to grow strong enough to survive the people and the god hunting him.

When it comes to action and adventure, every hero needs a good sidekick. Holmes has Watson, Batman has Robin, and Daniel has . . . Orrin. More like brothers than friends, they always have each other's backs. And as Daniel is the big, strong, handsome type, Orrin is more than happy to remain in his shadow at school, at parties, pretty much everywhere. Then things take a turn for the truly weird when a terrible accident catapults the pair into a world totally unlike their own, in which the rules of a role-playing game hold sway.

Ten years ago, Amelia woke up alone and lost in a broken world where she had to fight for her survival. Now, after reaching the pinnacle of power, defeating the Void itself, and escaping the abyss, she has finally found her way back into the real world. But instead of returning to Earth, she arrives in the land of Vacuos. A fantasy world with magic, monsters, Classes, and Levels. A world that is governed by a System like it were a video game.

On a typical day, on an average train platform, two warring sister goddesses found their avatars. One avatar, the young Yoshi, was swept away to the world of Ephemera to be a great hero of honor, courage, and light. The other, the not-so-young Seiji, was swept away to become a dark lord out to kill or conquer all in his path. But Seiji is in absolutely no mood for that nonsense. It's bad enough that on Earth he was a closed-off, misanthropic grouch with zero patience for other people. Now he's supposed to muster enough of a give-a-damn to lead vile hordes?

She wanted to be a Necromancer, but awakened as a Saint! Somehow her summoned heroes are all undead? How will the church react when their Saintess summons a skeleton in place of a mighty hero? Sofia isn’t too keen on finding out. In this world, Gods choose [Saints], and [Saints] summon [Heroes] from other worlds; everyone knows that. But Sofia had a thing for bones ever since she was a child; there’s only one [Class] she wants: [Necromancer]! When, by the whims of fate, she gets both classes at the same time, the system breaks.

Arthur lives with his father, a fallen but proud former noble, in Border Village #49, along with the other good folks condemned to toil in service to the Baron. But Arthur has an edge: a stolen heart card that secretly fell into his possession, thanks to a dragon. It’s a priceless source of power for the Baron and the tyrant will kill to get it back. Invaluable, too, to a young man of spellcasting ambitions.

When summoned to a fantastical world and granted powers by a broken System, most freshly minted protagonists would strap on their big-boy boots and get ready for their stats to start climbing. But Fischer isn't like most MCs. In fact, he doesn't want to be a hero at all. Fame? Fortune? Power? He had enough of all that in his old life. Discovering forbidden fishing techniques and petting every cute animal that comes within scritching distance? Now that's a good time.

Silas is inducted into the System, becoming the last in a long line of Earth's "forerunners." The rewards are great, but the danger is greater. We are not alone in the universe. The fate of five worlds hangs on how their forerunners perform. Will Silas have what it takes to win Earth a place in the multiverse? Or will Earth become another mining world stripped of all resources and left a barren husk floating in the cosmos?

Betrayed and left for dead by a group of slaving nobles, he thought there was nothing left but to bleed out as he counted the number of bricks on the ceiling. But fate had other plans.