Luo Shu arrives in a modern world teeming with hidden dangers and anime heroines, wielding a mysterious system that converts faith into divine power. Posing as an enigmatic mage in traditional robes, he sets up a fortune-telling stall in a bustling park, but his true goal is far grander: to construct a real-life Holy Grail War. Using his ability to read fate panels, he intercepts tragedies before they happen, guiding figures like idol trainee Hoshino Ai and the noble Yukinoshita sisters away from doom.

With every life he saves and every secret he reveals, his influence grows, drawing the attention of skeptics and believers alike. As he distributes mystical artifacts capable of projecting divine illusions, Luo Shu quietly manipulates the threads of destiny. He is not merely a prophet; he is the architect of a new era where myth bleeds into reality.

Soon, the entire world will witness the spectacle he has engineered, turning the mundane modern landscape into a battlefield for legends. The stage is set, the servants are waiting, and the war for the holy grail is about to begin.