Type-moon: Fight the Holy Grail War in Tsukihime?

Having been transported to the Type-Moon world, Elias knew the time to save the world had come when a red pattern appeared on the back of his hand. I, the FGO King, cleared the game in one life.

But why did the Holy Church arrest me? And what's with the vampires and the burial agency?

Ugh, why the Holy Grail War again? What's the point of going to Tokyo? Shouldn't we be going to Fuyuki?

Also, as soon as I got off the plane, I felt like there was a blonde woman on the street following me. Does anyone have any clue...?!

A chance encounter with a blonde woman on the street; she's incredibly open and honest, like a monster; once she opens her heart, she's invincible. —Elias

And so, Elias's life was ruined.

...

"So, you have some grievance against us, Elias?"

No, I wouldn't dare.