Tang Jing is an ordinary gaming otaku who unexpectedly awakens memories of his past life one day. He was actually a “Guardian” of countless crossover anime worlds, and once sacrificed himself to save them all. Now reborn, he discovers that he has been bound to a “Guardian System.” It seems incredibly powerful, but every use consumes his life force. Worse still, the dark forces he once sealed away are awakening in one anime world after another, while his greatest rival, “Zero,” another candidate for Guardian, is eyeing his System permissions, eager to take them for himself.
On the surface, Tang Jing has everything under control, strolling through one anime world after another as he gathers the heroines and averts crises. In reality, he's panicking like crazy, pushing himself to the brink of death in every battle. To stay alive and protect the people he loves, he must complete Guardian missions across a succession of crossover worlds and uncover the truth behind his death in his previous life, as well as the ultimate conspiracy lurking in the shadows. But every act of protection means a new sacrifice... Will he make it back alive this time?
