What Happens when the grim reaper gets tired of doing their job? When Death meets a young boy named Shi, a boy who knows death very well and choses him to be his next apprentice, Shi's World is turned upside down.

Kai is a hitman for a private military company and agency. He's mastered the art of killing at just 17 years old and is the best they have ever employed. But when he is given an assignment to do the opposite of what he's always done, he doesn't quite know what to do.

In order for Kuroh to keep playing GGO, she must defeat her father and an elite team in the group royale, Squad Jam.