When fantasy erodes reality, 18-year-old Lin Che is forced to become a "boundary breaker" connecting thousands of worlds. He possesses the forbidden ability to turn "concepts" into reality - and every time he uses them he pays an irreversible price. From the Breathing Techniques of the Demon Slayers to the spells of the Curse World, from the magic of the Holy Grail War to the personality of the Heroic Society... In the trial of endless reincarnation, he must answer an ultimate question: When saving the world requires erasing one's own existence, who is still willing to be the last wall?
