Arc 21The Road to Marineford

Bondrewd destroyed Enies Lobby’s anomalous domain, then gathered powerful allies and broke into Impel Down as the Marineford war approached. Flashlight joined the Marines’ defense against Whitebeard, and Luffy arrived on the battlefield calling for Ace.

Chapters 504–52825 summaries

Arc 22The Summit War and Aftermath

Luffy and his allies rescued Ace amid a battle reshaped by Bondrewd’s ritual, which resurrected many of the dead after Whitebeard’s death. With the war over, Sephiroth turned his attention to the changing World Government and preparations for Dressrosa, while deciding to confront York in Birka.

Chapters 529–55325 summaries

Arc 23The Babylon Alliance

Sephiroth expanded Babylon’s influence through York’s research, alliances with Fish-Man Island and the Whitebeard Pirates, and a confrontation with Bondrewd at Sabaody. He left the arc outlining Babylon’s strength and his plan to expand human civilization into space, then hinted at another scheme to Shyarly.

Chapters 554–57825 summaries

Arc 24The Hachinosu Operation

Sephiroth strengthened Babylon’s ties with the Whitebeard Pirates and Elbaf, while pursuing the Tremor-Tremor Fruit and arranging a mission tied to a Poneglyph on Hachinosu. The operation became entangled with Zephyr’s plans and a failed attempt to seize the Rocky Port, as Sephiroth prepared his own move against Hachinosu.

Chapters 579–60325 summaries

Arc 25Hachinosu and New Alliances

Sephiroth helped defeat Bondrewd’s ritual at Hachinosu, then expanded Babylon’s forces and manipulated Cipher Pol’s attempt to seize Babbage. The arc left Sephiroth preparing for new conflicts as he entered Elbaf’s Underworld and reshaped several allies with new Devil Fruits.

Chapters 604–62825 summaries
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