One Piece Omnibus Edition manga volume 29 contains volumes 85-87 and features story and art by Eiichiro Oda.

As Sanji is forced into a political marriage by the scheming Big Mom Pirates, Luffy and the Straw Hat crew must enter enemy territory to rescue him. The Straw Hats will need to work with allies they don't truly trust if they hope to succeed. But first things first: how will they crash the biggest wedding in the pirate world?!