Snowfield City held a fake Holy Grail War. Gilgamesh and Enkidu's Noble Phantasms filled the sky. The Pale Rider rapidly infected the entire city. Black mud churned around the Avenger Heracles. Even the fanatics who had mastered Hassans' eighteen deadly techniques had to fight for survival in the cracks. That's how it goes when gods fight: battles between humans and Servants are ultimately myths from a distant, unrelated world. If only the fake Holy Grail War in this world hadn't coincidentally, casually, and accidentally crossed paths with a certain red-haired man who made fakes.
"You say there's going to be a Holy Grail War here? For real?"
Ahem, I'm Shirou Emiya, age twenty-five, and a fake too. I'm perfectly suited to the Fake Grail constitution. One person might not be able to get much done. But what if you add a little more: the Sword of Promised Victory, an overpowered Pegasus for offense and defense, an infinite-mana jeweled sword, and a System GM Black-and-White Lesser Grail?
When the ally of justice and chief forger, together with the shady forces of the Emiya household, tries to sneak his way in... the nature of the war changes. Shirou Emiya keeps forging and inevitably ends up fighting the Servants. Yet when the Masters see a tenacious blaze as powerful as a demon god, they look at him strangely. And when he gets surrounded halfway through a fight by the five girls of the Emiya household, everyone draws a sharp breath and reaches the same conclusion.
Don't pity this guy, and definitely don't let him become your enemy.