Vol. 4Umbrella’s New Alliances

Sephiroth expanded Umbrella Corporation’s influence, resigned from the Marines, and forged alliances with Big Mom and Germa while helping his allies pursue new futures. The volume ends with Alabasta’s mining rights under negotiation after an aqua-blue-haired girl overhears Cobra and Baccarat’s discussion.

  • Sephiroth returned from the Rainbow Mist, reunited with Hancock, and gave her and her sisters Pure Gold rings.
  • Sephiroth helped Ace and Luffy face Sabo’s apparent death, stole Tom’s Pluton blueprints, destroyed Spandam’s warships, and saved Bell-mère’s village from Arlong.
  • Sephiroth intervened in Fish-Man Island’s crisis, helped save Queen Otohime, and captured Hody Jones and Vander Decken.
  • After Beck’s ambush killed students and Edward Weevil severed Zephyr’s arm, Sephiroth drove off the attackers and reattached Zephyr’s arm before resigning from the Marines.
  • Sephiroth ended Umbrella Corporation’s partnership with the Whitebeard Pirates, captured Shiki, and negotiated a secret alliance with Vinsmoke Judge.
  • Sephiroth comforted Brulee in Totto Land and entered Charlotte Daifuku’s wedding venue after Katakuri intervened.
  • Sephiroth agreed to an alliance with Big Mom, promising Giant clones and choosing Brulee as his bride.
  • Sephiroth helped Ace set sail, trained Luffy in Second Gear, turned Tashigi into a vampire, and helped Nami join Yamato’s crew before pursuing Alabasta’s mining rights through Baccarat.
Chapters 301–400 Read from ch. 301

Arc 13The Rainbow Mist Return

Sephiroth built his underworld Company, defeated the Phoenix Pirates, and became trapped in the Rainbow Mist, where he encountered the Underworld and met his younger self. After returning to the present, he reunited with Hancock and resumed his plans with his allies.

  • Hina confessed her love to Sephiroth, and he comforted her before visiting Gion, who demanded he kneel as punishment.
  • Sephiroth helped Ace and Luffy face Sabo’s apparent death, stole Tom’s Pluton blueprints, destroyed Spandam’s stolen warships, and saved Bell-mère’s village from Arlong.
  • The Rainbow Mist carried Sephiroth to the past, where he found the Vampire Fruit, cured Olga in exchange for Asier’s Pure Gold research, and studied Brook’s blood and the Revive-Revive Fruit.
  • Sephiroth recruited Du Feld, Dorag Pierrot, Giberson, and Umit into his Company, then returned to Luluka Island and helped defeat the Phoenix Pirates while saving Steel Bone Kong and other Marines.
  • After testing a drug made from Brook’s blood, Sephiroth’s soul nearly entered reincarnation, but he returned to his body and traveled through time to save his younger self and Hancock from Captain Peter.
  • Sephiroth returned to Sabaody Archipelago and renewed his alliance with the four Company leaders before traveling to Nine Serpent Island to reunite with Hancock and give her and her sisters Pure Gold rings.
  • At the villa, Black Maria updated Sephiroth on their projects, and Kozuki Hiyori asked for the Enma Blade before following him upstairs to discuss a task.
Chapters 301–325 Summaries Read

Arc 14Resignation and Reckoning

Sephiroth turned Hiyori into a vampire, intervened in Fish-Man Island’s crisis, and prepared to leave the Marines while teaching at the academy. After Zephyr’s students suffered heavy losses in the Hannibal ambush, Sephiroth resigned and the Five Elders began plotting to curb Umbrella Corporation.

  • Sephiroth turned Kozuki Hiyori into a vampire, gave her a Pure Gold ring, and learned her identity and loyalty to him.
  • Sephiroth helped save Queen Otohime, captured Hody Jones and Vander Decken, and offered to shelter fish-men on his Sky Island.
  • Sephiroth extracted the Target-Target Fruit power from Vander Decken, then negotiated his departure from the Marines while arranging for Kuro to represent his interests.
  • Sephiroth taught swordsmanship at the Military Academy, sparred with Zephyr, and began a relationship with Domino while recruiting Ain to restore ancient documents.
  • Zephyr led the cadets toward the Death Sailing Race, where Beck’s ambush and virus left Zephyr weakened and Edward Weevil severed his arm.
  • Sephiroth killed Beck, drove off the attackers, and reattached Zephyr’s arm, but the student casualties led Zephyr to lose his chief instructor post.
  • Sephiroth resigned after graduation, gave Ain the blade Thunderclap, and advised her to join Zephyr’s Pirate Guerrilla Force.
  • The Five Elders discussed Umbrella Corporation’s growing influence and planned a law that would force it to choose between Whitebeard and the World Government.
Chapters 326–350 Summaries Read

Arc 15Umbrella’s Hidden Alliances

Sephiroth used Umbrella Corporation’s new security-consultant role to end its partnership with Whitebeard, capture Shiki, and secure Germa Kingdom as a covert partner. He then traveled to Totto Land, where he comforted Brulee and arrived at Charlotte Daifuku’s wedding tea party under Katakuri’s protection.

  • Sephiroth announced that Umbrella Corporation would end its partnership with the Whitebeard Pirates, then gave Whitebeard five hundred billion Belly to settle the matter.
  • Sephiroth defeated Golden Lion Shiki, captured him, and took the Float-Float Fruit power to make Umbrella Corporation’s islands mobile.
  • Sephiroth ordered Gild Tesoro to withdraw the company’s public-facing New World businesses and hide its assets through underworld partners.
  • Sephiroth negotiated a secret alliance with Vinsmoke Judge, offering Germa Kingdom mech technology in exchange for cooperation and Reiju.
  • Sephiroth traveled to Totto Land for Charlotte Daifuku’s wedding and comforted Brulee after children mocked her third eye.
  • Katakuri gave Brulee a Devil Fruit that let her manipulate memories after she told him Sephiroth had protected her.
  • Sephiroth arrived at the wedding venue, refused Perospero’s demand to surrender his swords, and entered after Katakuri intervened.
Chapters 351–375 Summaries Read

Arc 16Allies and New Voyages

Sephiroth secured Big Mom’s cooperation, intervened when Yamato’s crew clashed with Marines, and helped Ace, Luffy, Tashigi, and Nami take steps toward their futures. He then pursued Alabasta’s resources through Baccarat, leaving the kingdom’s mining rights in play and a young girl secretly listening.

  • Sephiroth presented Big Mom with a Devil Fruit, then agreed to a private alliance by promising Giant clones and choosing Brulee as his bride, while Brulee happily accepted him.
  • Sephiroth discovered that Yamato and her companions had formed a pirate crew after confronting Marines who attacked civilians, and he forgave them while considering a Shichibukai title for Yamato.
  • Yamato’s crew clashed with Akainu’s Marines in Lulusia after Yamato stopped the execution of civilians, and Sephiroth arrived, challenged Akainu, then took the crew to Sky Island.
  • Sephiroth helped Ace set sail, trained Luffy to enter Second Gear, and offered Tashigi swordsmanship lessons before giving her Snow Stroll and turning her into a vampire.
  • Sephiroth gave Nami The Embrace and a Pure Gold ring, and Nami joined Yamato’s pirate crew after recovering her strength.
  • After prospectors discovered uranium ore and oil fields in Alabasta, Sephiroth sent Baccarat to negotiate with Cobra, who eventually agreed to sell mining rights in exchange for rainmaking and environmental technology.
  • A young girl with aqua-blue hair overheard Cobra and Baccarat discussing the deal and left the council chamber thoughtfully.
Chapters 376–400 Summaries Read
Volume 4 of 6