"Fate/Zero" is a Japanese light novel series written by Gen Urobuchi and illustrated by Takashi Takeuchi. It serves as a prequel to the visual novel Fate/stay night and is set in a fictional universe where mages summon legendary heroes, known as Servants, to compete in a battle royale called the Holy Grail War. The story follows several mages, including Kiritsugu Emiya, as they vie for the Holy Grail, a powerful artifact that grants wishes. The narrative explores themes of morality, sacrifice, and the consequences of one's choices. Each character has their own motivations and ideals, leading to intense conflicts and philosophical dilemmas. The series is known for its dark tone and complex characters, making it