Fate/Prototype: Sougin no Fragments

A prequel to Fate/Prototype, this story follows a young Ayaka Sajyou as she begins an ordinary morning sharing breakfast with her father and older sister, Manaka. Completely unaware of the danger unfolding around her, Ayaka remains oblivious to the fact that Tokyo has just become the battleground for a conflict of terrifying scale. This hidden war is the Holy Grail War, the first in a brutal series of mutual slaughters where seven Magi each summon a Servant to fight alongside them in a deadly battle royale. Their ultimate prize is the Holy Grail, a mystical and omnipotent device capable of granting any wish to its victor. As the seven Masters complete their summons and plunge into combat, the true nature of the ritual slowly comes to light. With every clash between Servants, deeper mysteries surrounding the Holy Grail are unraveled, pushing the participants toward an epic confrontation. This escalating war will test long-held loyalties, forge unexpected alliances, and force everyone involved to confront a single, unsettling question: who is the true Master orchestrating this Holy Grail War?