In the sprawling neon metropolis of Neo-Eden, where ancient traditions collide with futuristic innovations, Kaito Yamazaki stands as the heir to a sacred legacy. Bound by ancestral duty, he is the destined guardian of the Blade of Ages, an ancient sword imbued with the spirits and wisdom of his forebears. But when the unthinkable happens and the blade is stolen, Kaito's world is thrown into turmoil. Plunged into the chaos of a city teetering on the edge of anarchy, Kaito must navigate the treacherous streets of Neo-Eden to recover the stolen blade. His quest pits him against The Architect, a shadowy figure whose schemes threaten the delicate balance between the old and the new. As the city descends into a maelstrom of conflict and conspiracy, Kaito finds himself at the heart of a struggle that will determine the fate of Neo-Eden. Allies emerge from unexpected quarters, including Kiji Fukutoku, a genius hacker whose brilliance shines as brightly as her neon-dyed hair. Together, they delve into the underbelly of the city, where cybernetic enhancements and digital landscapes merge seamlessly with the world of tradition. Their journey reveals hidden truths and tests Kaito's resolve as he grapples with his identity as the heir to a tradition that feels more like a burden with each passing moment.