Once, the world was driven to the brink of despair. To become the blade that could save it from disaster, Cheng Jin resolutely entered the Trial Grounds.
Time passed, and by the time he returned, the seasons had turned more than a dozen times.
"Did humanity survive the crisis thanks to crystal weapons and magical theory?"
"My family have all disappeared, and I hear my childhood sweetheart and fiancée got married to someone else?"
"The land is strictly regulated, so I can't even get a plot to farm?"
Cheng Jin (3? years old), a lone hero with the resolve to save the world at any cost, found himself joining the ranks of the friendless just as he reached middle age, facing his lifelong nemesis: graduating straight into unemployment.