Page 0: - Chapter 421 title page features Nami playing billiards. - Bear-like suited figures watch Nami during the game. Page 1: - Buster Call is triggered targeting Strawhat Luffy and crew. - Approximately 60 targets identified excluding Nico Robin. Page 2: - Bridge of Hesitation is temporarily excluded from Buster Call targets. - CP9 chief claims responsibility for the exclusion order. Page 3: - Combat occurs inside a building during Buster Call. - Sogeking uses weapon named Kabuto against CP9. Page 4: - Scene occurs inside the underground passage beneath the sea. - Water violently floods the chamber through broken walls. - Multiple characters are trapped with no visible exit. Page 5: - Location is the Bridge of Hesitation during Luffy versus Rob Lucci fight. - Chamber is flooding rapidly from below. - Lucci clings to railing above the rising water. Page 6: - Luffy is leaping across collapsing walkways while under fire. - Rob Lucci has transformed into leopard-man form. - Warship bombardment is audible from the location. Page 7: - Luffy refuses to look away from Rob Lucci during the confrontation. - Bombardment of the area has started. - Sanji is present with the group on the ground level.