The First Emperor's Holy Grail War

This is a world where everyone knows the Holy Grail War is fictional, because this world is simply an extension of the real one.

A mysterious tech company suddenly announces a new worldwide Holy Grail War.

It's all just a publicity stunt, the boy thinks at first.

"Saber, Qin Shi Huang, tell me: are you my chancellor?"

But the girl claiming to be the First Emperor shatters that assumption.