ZoSan AU where Zoro is actually a tri-sword spirit, who can only properly manifest when all three swords are together. The Strawhats somehow come into possession of the Yubashiri, unknowing that it's one of the three, and Sanji takes up it's care until they can find a good port to sell it at.
It's not too unlike a knife, and he decides it could use a good sharpening. He's not going to use it to cut up chicken any time soon, but a sharper blade will surely sell better.
He's about to start sharpening when;
No.
Pauses. Listens. Shrugs it off. Goes to sharpen the blade again.
Wrong.
And it doesn't stop there.
















