Fate/Extra: The Black and White Moon

How do you win the Moon Holy Grail War?

1. Enter SE.RA.PH.

2. What the heck, your System is a purple-haired nobody whose sole purpose is to screw over her master.

She screwed you over again, so you can't summon a Servant.

The Servant you picked up won't listen to you either.

You're just a third-rate spiritron hacker here.

And nobody loves you.

[Note: The FGO described in this book isn't the FGO you're playing now. Don't take it as a reference.]