"Who am I? Where am I? How did I get here?" Those were the questions for a wayfarer by the name Shirou. Other than his single name and his strange outfit, he has no memory of his past. Sheltered by Crusch Karsten and her camp, he seeks the truth behind his existence. Can he find out his true identity? What is his purpose in this new world?

Shirou Emiya lost his family twice in his life, and finally being able to use magic he becomes closer to his adoptive father. A friend of his father tries to encourage him but it is perceived as an insult. At the end of the day, he makes a wish, a wish he was granted that would make him find true love, her lone sword in death and in life.