Because his wife, irisviel von einzbern, is only a container of the Holy Grail, and Emiya Kiritsugu also saw the scenes in the Holy Grail, the final result is that there are only three cut children in the world, but this is not what the cut children want, so the cut children ordered the saber to destroy the Holy Grail, so the Holy Grail cursed the cut children.

Brief introduction to the story of Fate/Zero;

Legend has it that the Holy Grail is a treasure that can fulfill the master's wishes. In order to pursue the power of the Holy Grail, the seven wizards summoned their souls to fight for it. This is the holy grail war.

Time goes back to ten years before the Fifth Grail War. The participants in the fourth Holy Grail War were Shiro and their parents. Emiya Kiritsugu and young Kotomine Kirei, who got the Holy Grail by hook or by crook, are three heroes. They are also kings, but they have different wills. The fourth holy grail war broke out.

Extended data:

Main roles:

1, Arturian Pendragon

Saber, just like the legendary King Arthur of ancient Britain-Arturia Pendragon. Emiya Kiritsugu successfully summoned the legendary King Arthur by using the scabbard of Excalibur.

During the Holy Grail War, she went to Dongmu with Emiya Kiritsugu's wife, irisviel von einzbern, to confuse the enemy's judgment. Emiya Kiritsugu acted in his own way in the dark.

Saber didn't know that the catalyst for calling herself was Avalon, the scabbard she lost in her last life, and Avalon was implanted into Alice Phil by a cutting heir without her knowledge. Emiya Kiritsugu and Master have different views because of their different ideas, and they also have cognitive differences in handling many things.

2. Emiya Kiritsugu

Saber's master, a man who is called "magician killer" by the outside world. I think magic, like machinery, is just a means to an end.

On behalf of the Ainz Belem family, they can be ruthless for the justice they believe in, and they can use magic such as "inner restraint" to achieve their goals by any means. I often get angry because my ideals are different from my actions. It has the dual attributes of "fire" and "earth".

Deeply in love with his wife Alice and his daughter Ilya. Dissatisfied with the recruitment of sabers, he prefers shadowy spellcasters and assassins to self-proclaimed chivalrous knights.