In the town of Fuyuki, far from human eyes, the Fifth Magical War over the Holy Grail is raging. The beginning of the conflict is behind us; participants have long since suffered their first losses, and even the naive newcomer Siro Emiya has begun to understand that there are no rules or obligations in this deadly struggle – except those voluntarily taken on by the Masters and summoned heroic spirits. As the saying goes, "you learn of them by deeds" – you cannot trust a word; deeds have shown that Siro"s fate is inseparably linked to Rin, the heir of the Tosaka clan… and a few others as well! No matter how you look at it, the Grail must be obtained, at least so that the mysterious vessel of wishes does not wreak havoc in the hands of others. For this, the main heroes spare no one, even themselves; they do not give up after defeats and betrayal. If earlier Rin wanted to fulfill her duty to her family, and Siro sought to bring happiness to humanity, now the kids no longer ponder lofty matters; they simply know that this is what must be done. One must rise and go into battle again, even if there are no strength or chances left. Magic itself has entered the game, and it will decide whether to punish the world for dangerous playthings or give another chance. And where everything will be decided, you already know – in the Endless Edge of Blades.