| Arc Segment | Episodes | Key Events | |-------------|----------|-------------| | Marineford Prelude | 457–459 | Luffy arrives at Marineford; Whitebeard's entrance | | Battle of Marineford | 460–476 | Admirals vs. Whitebeard commanders; Luffy's Haki burst | | Aftermath & Ace's Death | 477–489 | Emotional climax; Shanks ends the war; Luffy's trauma |