Yes, that's right, Sacchin, from Tsukihime and Melty Blood, as a Master in the Fifth Holy Grail War. Consider, please, that she had so much magical potential that she not only skipped the rather gross intervening stages of vampirism, going straight from victim to Dead Apostle, but she shortly thereafter developed her own fscking Reality Marble! Thus, I conclude that she must be powerful enough to be a Master.
Now, lets say that Fate/stay night takes place around three years after Tsukihime, and around one year after Melty Blood (which fits with their release dates), unless something in one of those games contradicts this. So, Satsuki journeys to Fuyuki City, in the hope that the Holy Grail will grant her wish (though I'm not sure what her wish would be - becoming human, perhaps? Being with Shiki? If she's over Shiki, or trying to get over him, maybe finding that one, special person, just for her?).
There's also the question of who her Servant would be. At first, I thought about her getting a Future!Counter-Guardian!Shiki (then, she could be with him), but I think that would be a bit overpowered. Also, what class would he be? I also thought about her getting Archer!Ciel, or Caster!Sion, or a historical Epic Hero, like Musashi.
So, could it be made to work?
Now, lets say that Fate/stay night takes place around three years after Tsukihime, and around one year after Melty Blood (which fits with their release dates), unless something in one of those games contradicts this. So, Satsuki journeys to Fuyuki City, in the hope that the Holy Grail will grant her wish (though I'm not sure what her wish would be - becoming human, perhaps? Being with Shiki? If she's over Shiki, or trying to get over him, maybe finding that one, special person, just for her?).
There's also the question of who her Servant would be. At first, I thought about her getting a Future!Counter-Guardian!Shiki (then, she could be with him), but I think that would be a bit overpowered. Also, what class would he be? I also thought about her getting Archer!Ciel, or Caster!Sion, or a historical Epic Hero, like Musashi.
So, could it be made to work?