Kiritsugu Emiya

Appearances

Kiritsugu Emiya first appears in the visual novel Fate/stay night as the deceased adoptive father of Shirou Emiya. Before his death, he taught Shirou the basics of magecraft and instilled his own ideals in him. Knowing he would not live to raise Shirou, Kiritsugu asked his friend Taiga Fujimura to care for the boy after he was gone. As the story unfolds, Shirou encounters Kiritsugu's biological daughter, Illyasviel von Einzbern, and learns that his adoptive father took part in a battle called the Fourth Holy Grail War. Following that conflict, Kiritsugu gave the young Shirou a protective artifact, the scabbard Avalon: The Everdistant Utopia, to keep him safe from harm.

Kiritsugu is the central figure in the light novel prequel Fate/Zero, which depicts his role in the Fourth Holy Grail War. This war pits multiple mages and their summoned Servants against one another, and Kiritsugu's Servant is Saber. He is shown as the husband of the homunculus Irisviel von Einzbern and the father of a younger Illyasviel. Born in Fuyuki City, Kiritsugu grew up on Alimango Island with his father, Norikata, a mage who specialized in time magic.

As a boy, he had a crush on a local girl named Shirley. That changed when Shirley drank one of Norikata's potions and turned into a vampire. The village was soon flooded by Executors from the Church and Enforcers from the Mages' Association, agents sent to destroy the vampires and erase all traces of the outbreak. Realizing his father had planned to use the village as a testing ground for immortality research, Kiritsugu shot him to stop a similar disaster from happening elsewhere.

Afterward, he was taken under the wing of Natalia Kaminski, helping her hunt down rogue mages. During one mission, Kiritsugu killed Natalia to prevent a catastrophic outcome. About eleven years before the Fourth Holy Grail War, he rescued a child soldier and took her on as an apprentice, naming her Maiya Hisau and training her as Natalia had trained him. Maiya later became his mistress.

Two years after that, the Einzbern family hired Kiritsugu to represent them in the upcoming war. Believing the Holy Grail could grant his wish for world peace, he abandoned his mercenary work.

Creation and design

Kinoko Nasu designed Kiritsugu Emiya to use the pronoun "boku," a first-person term typically associated with young boys, a detail Gen Urobuchi admitted he would never have thought of himself. Character designer Takashi Takeuchi observed that a younger Kiritsugu resembles a shonen manga protagonist. Despite being the main character of Fate/Zero, Kiritsugu appears in very little artwork compared to others, featuring on only two covers: one from behind and the other as a silhouette. Urobuchi reasoned that since Kiritsugu avoids the spectacle of Heroic Spirits, making him visually unnoticeable was the best approach, believing that "a character who spreads justice should speak with their back." Nasu notes that Kiritsugu tends to avoid confronting his personal issues, unlike his adopted son Shirou Emiya, whose growth and characterization receive deeper exploration in the visual novel.

Urobuchi first approached Nasu with the concept for Fate/Zero after being inspired by the idea of a duel between Kiritsugu and Kirei Kotomine. Following discussions with Takeuchi, Urobuchi felt his career was stable enough to finally write the story he wanted. He maintains that despite Fate/Zero's tragic ending, it does not undermine the happy conclusion of Fate/stay Night, as the prequel focuses on Kiritsugu's earlier life. When the project began, Nasu granted Urobuchi complete creative freedom over Kiritsugu's characterization.

Because Saber states in the original Fate/stay night that she barely knew her former master, Urobuchi created Irisviel von Einzbern, Kiritsugu's wife, to serve as a bridge for communication between Saber and Kiritsugu. The staff worried about how Urobuchi would handle the relationship between Kiritsugu and Saber; they feared that if Saber's distrust toward him was too strong, it would be difficult for her to later open her heart to Shirou in the sequel.

Consequently, Urobuchi had to revise some of his original plans. Urobuchi has stated that in his works, characters who survive the plot's events become "pillars." Although Saber, Kiritsugu, and Kotomine are the major survivors, Kiritsugu dies offscreen, and since Saber does not have a large role in Fate/Zero, the pillar character ends up being Kirei.

Reception

Critical reception to Kiritsugu Emiya has been largely favorable. Morgan Lewis of VG Culture HQ described him as one of the most fascinating figures in anime and Japanese media, highlighting the hidden complexity beneath his cold, lifeless gaze and his admirable aspirations. Lewis also commended the character’s layered flaws and declared him the greatest character in Japanese anime. Kotaku named him the standout character of Fate/Zero, noting that while his actions are questionable, he is far from a soulless killer, which makes him compelling to watch.

Anime UK News portrayed him as a tragic hero whose depth shifts depending on the medium, though they felt the manga version fell short. Anime News Network praised the shared tragedy between Kiritsugu and Saber, noting that both characters’ desires to solve global problems made the series worthwhile. They observed that the two are opposites due to their backgrounds yet share similarities, and lauded the profound tragedy affecting Kiritsugu and other magicians for leaving viewers with a somber impression.

UK Anime News Network appreciated how the later story explored Kiritsugu’s relationship with Saber, showing that despite their similar personalities, their methods diverge due to Kiritsugu’s violent approach. The Fandom Post enjoyed how the anime revealed Kiritsugu’s past, adding depth and encouraging rewatches, though writer Chris Beveridge felt a full episode dedicated to it was excessive. Koi-nya noted that while Kiritsugu appears cruel, his interactions with Irisviel and Ilyasviel reveal a joyful side, and his true nature unfolds throughout the narrative.

Capsule Computers observed that as Kiritsugu’s brutal tactics intensify and his character evolves, he becomes an even sharper contrast to Saber. They praised the gritty flashback episodes for clearly showing how his dark childhood forged a harsh man despite his desire for world peace. Finally, Saber’s Japanese voice actress, Ayako Kawasumi, expressed regret that Saber failed to grasp Kiritsugu’s beliefs and his underlying kindness.