Isn't this based of one of the choices in the game? like summoning her actually somehow leads to a bad end.....or is it the other way around and not calling her leads to the bad end?

ugh, no good....if I keep thinking about this I'm gonna end up wasting 20 hours replaying the game.

UNOwens said:

Isn't this based of one of the choices in the game? like summoning her actually somehow leads to a bad end.....or is it the other way around and not calling her leads to the bad end?

Cherem said:

Yes, Rider cuts Shirou's hand off for trying, commence Taiga Dojo.

I remember when that got me, it was such a trap.
It was the same with one of the choices in Tsukihime too.