I did thought of this.... like Sandai might a have DF 🤔🤔.
1/ In a SBS Oda said that Zoro would not eat a devil fruit but his sword would and the fruit would be Uo-Uo no Mi.
2/ In term of power and fame, Sandai is clearly lacking behind Enma and the Wado.
3/ Vegapunk is the first person to succeed to make a object eat a fruit
4/Fruit (especially Zoan) and sword have a will
Sandai might have ate the Uo-uo no Mi and Zoro wants Vegapunk to explain to him how this work.:zorothink: