Volume 90 shifts the focus from Whole Cake Island to the grand global stage of the Reverie at Sacred Marijoa. Kings and rulers from across the world gather, revealing the political tensions shaping the future of the seas. Familiar faces return as long-running storylines begin to connect. Secrets about the World Government and hidden powers slowly emerge. The balance of power between pirates and authorities appears more fragile than ever. Revolutionary forces move quietly in the shadows. The scope of the story expands beyond individual battles to worldwide consequences. Oda deepens the lore of the One Piece universe with shocking revelations. The volume builds anticipation for the next massive arc. Volume 90 marks a pivotal transition toward even greater conflicts ahead.