Volume 78 expands the stakes dramatically with the shocking reveal of Sanji’s mysterious past. A new wanted poster orders him to be taken alive, hinting at deeper family ties. The alliance to take down Kaido officially forms between pirates, samurai, and minks. The Road Poneglyph’s importance to reaching Laugh Tale becomes clearer. Meanwhile, Kaido himself makes a terrifying and unforgettable appearance. His overwhelming power redefines what it means to be a Yonko. Tension builds as the crew splits into separate missions. Emotional conflict arises over Sanji’s sudden departure. The New World’s brutality becomes increasingly evident. This volume sets the stage for the Whole Cake Island arc.