Comprehensive Comics, I Expand the Dimensions in This World

Lin Xun traveled to a parallel world. Since the "technology" of this world has died, the world will inevitably usher in destruction if development stagnates. He was called into the world as a savior, thereby setting the world on a "fantastical" path. Through the code in his hand, Lin Xun can exchange for any items in other worlds, and can even travel through different worlds. Whether it's the Sharingan, projection magic, or demihuman blood, or even summoning characters from other worlds. Liuying, Katishia, Rem, Fulilian, Uchiha Hikaru "Very well, then the first Holy Grail War begins!"