Did the Holy Grail know Kiritsugu would reject it? Who can say? But even if it initially chose him to be its bearer, his order to Saber to destroy it flipped the script. It also flipped the cup, as the Grail’s destruction means the black ooze it contained falls upon Fuyuki, destroying everything in sight, to Kiritsugu’s great despair. Even trying to do the right thing at the right time would seem to have backfired on this exceedingly unlucky and tortured soul.
Speaking of tortured souls, Kariya is still barely alive when he returns to the Matou basement, but while his senses tell him he is reuniting Sakura with Rin and Aoi, in reality Sakura is abandoning him to the Crest Worms and accepting the fate he tried in vain to keep her from.
Perhaps it was the contents of the Grail, not the Grail itself, that mattered most, as those contents fell on Archer, but rather than destroy him along with everything else, it gave him physical form (though not clothes). And because Gilgamesh still had a pact with Kirei, it resurrected him, albeit with no heartbeat.
That literal lack of a beating heart is indicative of his departure from humanity, as is his apparently Grail-fulfilled wish for death and destruction around him, and a hunger to “learn more” and explore the depths of his inhumanity. But as I said, the Grail will never fully satiate; at best it can only lock people—Servants and Masters alike—in a perpetual state of searching.
As for Kiritsugu, he’s done searching. Indeed, he seems to be just about done with everything, owing to the curse bestowed on him by a scorned Grail and his entire life’s work burning before him. The last thing he searches for—a single survivor among the scorched rubble—is something he ironically finds immediately.
By saving that single life—a young Shirou—Kiritsugu himself is saved. It’s a concept a sneering Kirei can’t possibly comprehend enough even to envy.
With that, the clock on the Fourth Holy Grail War reaches…Zero and comes to an end, with the official winner in doubt, though more-or-less claimed by Kirei, since the Grail seemingly brought him back.
Back at his “grandparents”, Waver announces he’s going to set aside his magical studies for a bit, get a part-time job, live with them, and save up enough to travel the world his king once conquered a good chunk of.
Kirei has upheld his promise to his master to look after Rin after he’s gone, likely so that he can observe and absorb all of the grief, pain and suffering Rin is likely to experience on the long, hard road all heads of great families must walk.
Rin maintains a stoicsm beyond her years at her father’s futural, even as she wheels her brain-damaged, delusional mom around. What gets her to crack and shed tears is the Azoth dagger; Kiritsugu twisting the blade like the piece of work he is.
And Saber, poor Saber, is back in Britain, on a battlefield strewn with corpses, having led everyone nowhere but to their own deaths. She remembers Lancelot’s last words to her, about how he only ever sought her righteous judgment for betraying her and falling in love win Guinevere.
Arturia considers herself a failed king who never understood anyone, and considering her surroundings it’s hard to argue with that assessment.
As for Saber’s former Master, he is banned from Einzbern Castle forever, having failed to secure the Grail for them, and never sees his daughter Ilya again. So he adopts Shirou, fixes up the old safe house, and spends the next five years raising his adoptive son and living a quiet but happy life.
One night he tells Shirou how he once wanted and tried to be a hero, but ultimately failed. Shirou confidently promises his dad he’ll become a hero in his place. A heavenly light suddenly shines above Saber; a ray of hope.
Clearly contented by his son’s words, Kiritsugu starts to peacefully pass away, with an answer for his friend Shirley’s question about what he wanted to be when he grew up: he wanted, and still wants, to be a hero.
* * * * *
And that’s it for Fate/Zero! Boy, what a ride it’s been these past five weeks. That was a far better show than I could have imagined…which is why it took so long after UBW to watch it. Burned by previous prequels to beloved works, I was worried knowing pretty much how everything would end would make it difficult for the stakes to matter.
Yeah…I was dead wrong about that. Not only was I far more emotionally invested in Zero, it was a lot more approachable, had a lot more heart, and took a lot more risks than the smoother, shinier UBW. It’s not that UBW is bad, it’s simply a matter of Zero kicking ass in virtually every aspect of the game. It wasn’t just a great anime, it was great television; great storytelling, full stop. So thanks to everyone out there who recommended it to me. It was well worth a look back.