Shirou Emiya is the main protagonist of the visual novel and anime series Fate/stay night. He is a kind-hearted and idealistic high school student who becomes a participant in the Fifth Holy Grail War. Shirou aims to become a 'Hero of Justice' like his adoptive father, Kiritsugu Emiya, and is known for his strong sense of justice and willingness to protect others, often at the cost of his own safety. Throughout the series, he forms a significant bond with the servant Saber and develops as both a fighter and a person.