Shirou Emiya is the main protagonist of the visual novel and anime series Fate/stay night. He is. Shirou Emiya (衛宮 士郎, Emiya Shirō) is the main protagonist of Fate/stay night who acts as the Talk:Shirou Emiya · Shirou Emiya (Fate/kaleid · Fuyuki Holy Grail War. Shirou Emiya--a boy aspiring to become a Hero of Justice. What will he gain through the 5th Holy Grail War.