This is the tenth year since the Holy Grail War ended and the fifth year since Emiya Shirou became the Magician Killer.
After going around and around, everything is back to where it started.
The ending has not changed, maybe it cannot be changed?
In the end, he followed the same path as Emiya Kiritsugu, choosing one hundred and one among one hundred and one hundred and one without hesitation and killing one hundred. Emiya Shirou met a familiar stranger in a small town in Western Europe.
Ireland's Son of Light, whose name is Cú Chulainn's Heroic Spirit.
"Boy, what a familiar face. Isn't this the same as that guy?"
"I'm going to destroy the Holy Grail here. Do you want to be my enemy? Lancer"
"It doesn't matter what happens to the Holy Grail. The reason why I'm here is just to have a good fight. But my Master girl wants the Holy Grail, so let's fight, Archer!"
"I am the..."
Concept: reincarnation of fate, a complete circle.