Gates appeared all over the world, and humanity was on the verge of extinction due to the monsters that came pouring out of them. Kai, who opened a Gate, had been in a coma for three months after being attacked by the monsters. When he woke, he found not only a mysterious status screen but also a unique ability that allows him to level up other people when he completes missions according to the screen. Perhaps I can use this skill to save the world ⁉ If so, I will try to save the world by level transfer !