Wait its conspiracy theory time
-Oda intended for Cp0 to come to Wano to catch Nico Robin.
-Sanji leaked her exact location to Cp0
- Cp0 will come and capture nico robin to gain her knowledge about the polygraphs once she is weak from fighting black maria
-
Cp0 kill Sanji and run away with nico robin
- The alliance beat Kaido and his allies and realize robin is missing
-They decide to follow Cp0
* Cp0 next opponent for the straw hats?