TV-Series
Description
Shirou Emiya serves as Illyasviel von Einzbern's adoptive older brother in this continuity. Orphaned by a fire roughly ten years before the main events, he was taken in by Kiritsugu Emiya. His biological parents' identities stay undisclosed, and the "Great Fire" from other timelines never happened here. Due to complications in Kiritsugu and Irisviel's family registry, Shirou retains the "Emiya" surname. He lives with Illya, Irisviel, and homunculus maids Sella and Leysritt, often voicing a wish for Kiritsugu's return to balance the household's overwhelming female majority.

Physically, Shirou has auburn hair, fair skin, and golden eyes. His standard attire includes the Homurahara Academy uniform or casual wear like a white shirt with blue sleeves and jeans. Facial features appear softer, rounder, and calmer than his counterparts—a narrative design choice reflecting his peaceful, stable life.

Personality-wise, he shares core Shirou Emiya traits: kindness, helpfulness, and strong domestic skills, especially cooking—occasionally sparking friction with Sella. Yet he exhibits a more carefree, less burdened demeanor overall and shows genuine concern for Illya's well-being. A recurring trait is his obliviousness to romantic advances from Illya, Chloe, Rin Tohsaka, Luviagelita Edelfelt, Sakura Matou, and others, often leading to their disappointment. This, combined with accidental encounters in compromising situations, prompts Rin to liken him to a romantic-comedy game protagonist.

Within the narrative, particularly during "Fate/kaleid liner PRISMA☆ILLYA 2wei Herz!", his role is supportive and comedic in household and school settings. Examples include joining beach trips, hot springs visits, and school festivals. An early incident involves him accidentally walking in on Illya during her bathroom contract with Kaleidostick Ruby, resulting in his knockout by the stick. He frequently endures comedic misfortune—whether from Ruby's experiments, Auguste's appraisals, or Irisviel's teasing—leading him to comment on his "bottom rung" status in the household hierarchy.

Significantly, multiple female characters harbor affection for him, though he doesn't actively reciprocate. Illya displays distinct "Big Brother Attraction," noted by Ruby and classmates. Chloe seeks him for mana replenishment via kissing, while Rin and Luvia's interest fuels comedic misunderstandings he overlooks.

Unlike his Fate/stay night version, this Shirou lacks knowledge or ability in conventional magecraft, portrayed as an ordinary high school student without Projection or Reinforcement. His expertise lies in household management, repairs, and cooking.

Key trivia underscores how his peaceful existence shapes his calmer appearance, explicitly stated in a manga extra chapter. His status as the sole male in the Einzbern household remains a consistent source of minor stress and humor. Later story developments feature a parallel-world Shirou Emiya protecting Miyu Edelfelt, but the primary Shirou with Illya maintains his ordinary, non-combatant role throughout "2wei Herz!".