“Otherworlders… we beg you to save our world from ruin.”

Rey and his classmates get summoned to another world, and they’re given Skills and Classes based on their limited Karma.

Everyone gets multiple Skills and a decent Class in order to survive the new world.

However, Rey decides to invest all his Karma on a single Skill, leaving him with the weakest Class.

Unknown to everyone, though, he has the potential to be the strongest.