Shirou is Illya's brother, and a normal high schooler with no knowledge of magic. He is much more carefree than his Fate/stay night counterpart, and he has the general trait of accidentally running into perverted situations, which makes Rin compare him to an eroge protagonist in reference to Fate/stay night. Illya, Rin, Luvia, and Sakura are openly attracted to him, though he doesn't show any interest to Rin and Luvia's disappointment. Shirou tends to be treated poorly by the people around him, though he admits that he's gotten used to being at the bottom rung of the ladder. It is unknown what happened to his biological parents, as the Great Fire had never occurred, but he was still adopted by Kiritsugu about ten years ago, similar to his Fate/Stay Night origins. Miyu's brother in the alternate world is Shirou's counterpart, currently imprisoned for helping Miyu escape.