13 Assassins ending: Koyata took a blade through the neck, so how is he alive in the final scene?
Takashi Miike kills twelve of his thirteen in meticulous detail — and then hands you a resurrection with a straight face and no receipt.
Takashi Miike's 13 Assassins is scrupulous about its arithmetic of death. Forty-five minutes of mud, blood and burning cattle account for nearly everyone: of the thirteen men who set out to assassinate the sadistic Lord Naritsugu, only the young samurai Shinrokuro walks out of the village. Except — there in the final scene, grinning and entirely intact, is Kiga Koyata, the scruffy hunter the party found strung up in the forest, who took a blade through the neck in the battle after one taunt too many at the samurai way of life. We saw the wound. The film saw the wound. Nobody mentions the wound.

Miike offers no explanation whatsoever, and — per Collider — has kept quiet about it ever since. Which leaves three readings, all of them deliberately left open.
The three explanations, in ascending order of unease
- He's not human. Koyata lives wild in a forest, appears immune to pain, eats anything, fights with rocks and logs, and lusts after his Upashi with cheerful single-mindedness — a checklist that maps neatly onto Edo-period yōkai folklore, forest spirits being a going concern in the very era the film is set. The neck wound doesn't kill him because there's nothing mortal to kill.
- He's a hallucination. Shinrokuro, concussed and soaked in the blood of twelve comrades, conjures the one member of the party who found the whole samurai enterprise ridiculous — freedom, wearing Koyata's face.
- They're both dead. The bleakest version: the reunion happens on the far side, and Shinrokuro simply hasn't noticed. Koyata pointedly never answers the question about how he survived.
The film tips its hand, if anywhere, in the farewell. Shinrokuro tells the hunter to go and live his life; Koyata, who knows better, calls back:
"'Til the next life!"
Not "goodbye" — a booking for the hereafter, from a character who treats death as a scheduling matter.
Why Miike keeps mum
There's a structural joke buried in it. Naritsugu spends the film enchanted by death and slaughter as aesthetic experiences; the samurai spend it dying magnificently for a code; and the one figure who ambles out untouched is the man who declared the entire caste useless — with, as Collider notes, no explanation given for his reappearance and none coming.
Twelve men die by the sword's logic. The film's sole survivor is the one who never accepted the logic in the first place. That's not a plot hole; that's the thesis with a smirk on it.
Koyata's stated post-war plans, for the record: give up on Upashi, cross the sea, and take up banditry — possibly in America. In this life or the next.