Arc 17The Moon and the Jade Nebula

The Straw Hat Pirates purified the Cloud Roar Behemoth, found the lunar refuge Endless Vearth, and learned of the Observers and their Purge Protocol. They formed an alliance with Qingyang II’s resistance before reaching Eleusis, where its guardians revealed that their peaceful society hid the Observers’ origins and a possible key to understanding them.

  • Allen purified the Cloud Roar Behemoth’s core, severed its link to the crystal tower, and destroyed the Lord of the Dark Abyss’s core consciousness with the crew’s help.
  • The Straw Hat Pirates recovered and repaired the Ark Maxim, then used it to cross the storm barrier and follow an ancient star chart toward the moon.
  • At Endless Vearth, Laisesu revealed the Observers’ plans, entrusted Allen and Robin with the Star Core’s knowledge, and urged the crew to unite resistance groups.
  • Allen and the crew triggered the Moonfall command, destroying Endless Vearth and the Purge Protocol fleet’s vanguard before setting course for the Jade Nebula.
  • The Straw Hat Pirates helped Chief Ogen and Qingyang II’s free peoples defeat the Crystal Husk Empire’s forces, then formed the Qingyang Free Peoples Alliance and destroyed the Eye of Qingyang.
  • After departing Qingyang II, Robin and Allen discovered that the Crystal Husk Empire served the Sovereign Will and that the Purge Protocol had marked the Eleusis Star Cluster as a high-risk quarantine zone.
  • In Eleusis, Oriharu told the Straw Hat Pirates that the guardians had sacrificed evolution and strong emotions to evade the Purge Protocol, and that they guarded the Observers’ origins and a possible key to understanding them.
Chapters 401–425 Vol. 5 Read

Ch. 401The guardian's lament-Cloud Roar Behemoth

The Straw Hats and Allen fought the corrupted Cloud Roar Behemoth, whose instability threatened to make Kumokakure Village fall from the sky. Allen purified the Dark Abyss core in its head and severed its connection to the sacred crystal tower, but the chapter ended as the Light of Purification erupted.

  • The winged elder warned that the Cloud Roar Behemoth's death or loss of control could destabilize Kumokakure Village's floating foundation.
  • Allen determined that they had to purify the Behemoth's corrupted core and sever its energy link to the sacred crystal tower.
  • Luffy drew the Behemoth's attention while Zoro, Sanji, Ace, and the others attacked and supported the plan.
  • Robin tracked the Behemoth's energy paths as Allen moved toward its corrupted head.
  • The Behemoth's remaining clear eye pleaded with Allen, who touched its core with purifying light and severed the dark energy connection to the tower.

Ch. 402The power of resonance-filling the rift with hope

Allen discovered that his purifying power could counter the Lord of the Dark Abyss and began channeling it through the rift to weaken the evil from within. As the Straw Hat Pirates and Kumokakure Village’s warriors defended the crystal tower, the Lord launched a fierce counterattack.

  • Allen sensed the Lord of the Dark Abyss through the rift and realized it feared the Light of Purification.
  • Allen proposed sending purification and hope through the rift to reinforce the seal and weaken the Lord from within.
  • Luffy, Zoro, Sanji, and the winged warriors agreed to protect Allen while he worked.
  • Allen channeled the Light of Purification into the rift, and the crystal heart resonated as the darkness around the runes faded.
  • The Lord of the Dark Abyss gathered black clouds and cloud beasts to attack, beginning a battle while Allen’s consciousness descended toward its sealed core.

Ch. 403A deathmatch on two fronts-The light of protection and the abyssal tide

Allen fought the Lord of the Dark Abyss within the contaminated energy pathway while the Straw Hats and Winged Tribe defended the crystal tower from the cloud beasts. Allen’s purification power resonated with the seal, but the Lord’s roar signaled an imminent counterattack.

  • Allen resisted the Lord of the Dark Abyss’s visions and poured the Light of Purification into the darkness.
  • Usopp, Zoro, Sanji, Franky, Brook, Chopper, Nami, and the Winged Tribe fought off waves of cloud beasts around the crystal tower.
  • Zoro and Sanji charged the gigantic dark-crystal cloud beasts as the defensive line buckled under the horde.
  • Robin guarded Allen inside the tower while the crystal shook from the Lord of the Dark Abyss’s attacks.
  • The heart-shaped crystal released a pillar of light, briefly dispelling the darkness and disrupting the cloud beasts’ control.
  • The Lord of the Dark Abyss roared in pain and fury, and the defenders braced for its final counterattack.

Ch. 404The Torch Dragon's Wrath-Spacetime Lockdown and Stardust Purification

Allen used his control of time and space to contain the cloud beasts while purifying and annihilating the Lord of the Dark Abyss. The island and its inhabitants were saved, and the survivors bowed to the exhausted Allen as their guardian.

  • Allen unleashed his full power and slowed the cloud beasts around the crystal tower, easing the pressure on the defenders.
  • Allen banished the unstable cloud beasts into miniature mirror spaces, containing their explosions.
  • Allen combined stellar energy, purification light, and the Torch Dragon's powers to destroy the Lord of the Dark Abyss's core consciousness.
  • The floating island stopped collapsing, the dark clouds dispersed, and the cloud beasts returned to normal.
  • Robin supported the exhausted Allen as the Winged Tribe elder and survivors knelt to thank him.

Ch. 405A debt of gratitude and a secret treasure-setting out for the moon!

After Allen helped bring peace to the Sky Archipelago, Robin discovered that the Winged Tribe’s crystal tower and ancient seal were connected to the moon. The Straw Hat Pirates decided to seek the moon and the ancestral blueprints for Endless Vearth.

  • Allen recovered from using his power while the Winged Tribe honored him and helped him recuperate.
  • Robin studied the tribe’s records with the elder and learned that the crystal tower might be a lunar beacon.
  • The elder revealed that the Winged Tribe descended from the moon’s Watchers and had stayed to guard a seal and await a summons.
  • Luffy excitedly declared that the Straw Hat Pirates should visit the moon, and his crewmates embraced the idea.
  • The elder offered to help them find an ancient ruin containing the blueprints for Endless Vearth, setting the crew on a new adventure toward the moon.

Ch. 406Ark Maxim and Endless Vearth

The Straw Hat Pirates learned that the Winged Tribe’s lost Endless Vearth Blueprints were connected to the Ancestor Altar in the dangerous Eye of the Storm, and decided the Ark Maxim could help them reach it. After receiving a farewell from Kumokakure Village, they set sail for Skypiea to recover the ship and begin their journey toward the moon.

  • The Winged Tribe elder told the Straw Hat Pirates that the Endless Vearth Blueprints were a lost treasure connected to the Ancestor Altar in the Eye of the Storm.
  • Robin, Nami, Chopper, and Allen identified the Ark Maxim as a possible way to reach the forbidden zone, and the elder confirmed it appeared in the tribe’s ancient poems.
  • Luffy declared they would go to Skypiea and take the Ark Maxim, while Nami corrected him that they would recover it.
  • After Allen recovered, the Winged Tribe elder gave him a crystal amulet, and the Cloud Roar Behemoth bid him farewell.
  • The Thousand Sunny left Kumokakure Village as Franky began sketching Ark Maxim modifications and Nami plotted the route to Skypiea.

Ch. 407Return to Angel Island

The Straw Hat Pirates returned to Skypiea and learned that the Sky-Splitting Pirates had occupied Upper Yard and were trying to claim the Ark Maxim. Luffy and his crew confronted them, leaving a fight about to begin.

  • The Thousand Sunny reached Angel Island, where the Straw Hat Pirates noticed the island was neglected and sparsely populated.
  • Gan Fall told the crew that the Sky-Splitting Pirates had been exploiting Skypiea and were studying the Ark Maxim in Upper Yard.
  • Luffy decided to take the Ark Maxim, and Gan Fall guided the crew to Upper Yard.
  • The Straw Hat Pirates found the pirates camped around the Ark Maxim, and Allen assessed the strength of their leader and officers.
  • Luffy challenged the Sky-Splitting Pirates' claim to the ship, and Zoro and Allen prepared to fight their scar-faced captain.

Ch. 408The thunderclap of a new era

The Straw Hat Pirates defeated Barton’s Sky-Splitting Pirates and took possession of the Ark Maxim. Franky planned to repair and modify the ship, while Allen considered whether he could provide the energy it needed.

  • Barton ordered his crew to attack the Thousand Sunny, but the Straw Hat Pirates quickly overwhelmed the pirates.
  • Barton charged Luffy with a twin-sword attack, and Luffy knocked him unconscious with a single Elephant Gun.
  • The surviving Sky-Splitting Pirates fled, ending their crew’s two-year threat to Sky Island.
  • Allen and Franky examined the damaged Ark Maxim, and Franky explained that repairing it would require a suitable energy source.
  • Robin showed Allen and Gan Fall a rubbing mentioning a power core and an ark reactor, while Allen considered using his own energy to start the ship.

Ch. 409The reactor's resonance

The Straw Hat Pirates repaired the Ark Maxim but could not activate its reactor until Allen used the power of the stars to ignite it. With the spacecraft running on a steady stellar energy supply, the crew prepared to head for the eye of the storm and seek the secret treasure leading to the moon.

  • Franky studied the Ark Maxim’s reactor and found that the crew lacked a suitable energy source to power it.
  • Allen tried feeding Torch Dragon source energy into the reactor, but it only briefly lit the ancient patterns before fading.
  • Robin suggested that Allen use the power of the stars, which might match the energy used by the ancient lunar civilization.
  • Allen turned himself into a relay for starlight, and the reactor activated, sending stable energy through the Ark Maxim.
  • Franky confirmed that the reactor was working, and Luffy urged the crew to head for the eye of the storm.

Ch. 410The Ark Maxim Sets Sail

The Straw Hat Pirates took the repaired Ark Maxim into the Eye of the Storm, where Allen sensed an ancient defense system guarding the route to the Endless Vearth Blueprints. After Allen opened a passage through the storm, the ship reached a tranquil center containing an ancient altar and a glowing stone tablet.

  • Franky announced that the Ark Maxim’s repairs were complete, and the Straw Hat Pirates boarded with Gan Fall and Pierre to test-fly it.
  • Gan Fall guided the Ark Maxim through the White Sea toward the Eye of the Storm, where Nami recognized the extreme weather as a barrier and Allen sensed an ancient will within it.
  • Franky activated the Ark Maxim’s shield and drove the ship into the storm as Nami navigated around lightning, violent winds, and hail.
  • When the shield began losing power, Allen used Law of Space: Severing the Flow to open a passage through the storm.
  • Franky piloted the Ark Maxim through the passage, and the crew arrived at a calm area centered on a white-jade altar and a glowing stone tablet.

Ch. 411Whispers of the Star Chart and an Ancient Warning

The Straw Hat Pirates activated the ancient tablet and learned the route to Endless Vearth, a hidden world on the moon, along with a warning about the awakened Observers. Allen and the crew set course for the moon aboard the Ark Maxim.

  • Allen carefully disabled the barrier around the altar, and Luffy touched the tablet.
  • The tablet shared visions of the Moon People, their migration to the blue planet, and the concealed refuge called Endless Vearth.
  • The star chart revealed the route and energy frequency needed to cross the force field, while a warning identified the Observers as a threat and called the Dark Abyss their servant.
  • Robin considered whether the lunar civilization was connected to the Void Century, while Franky recorded the chart and Luffy agreed to face the new challenge.
  • Allen asked the crew if they were ready to go to Endless Vearth, and the Ark Maxim set course for the moon.

Ch. 412Voyage Across the Lunar Sea-Silence and Peril

The Ark Maxim traveled through space toward the moon, where Allen and the crew hoped to find Endless Vearth. Near the moon, automated craft attacked them, and Allen destroyed several before warning that the crew had been marked by a larger force.

  • Franky piloted the Ark Maxim toward the moon using the ancient star chart while Nami monitored their course.
  • As the ship neared the moon, its alarm detected unknown high-speed craft approaching from behind.
  • The black automated craft fired energy beams at the Ark Maxim, damaging its shield, while Zoro and Sanji fought back without stopping them.
  • Allen entered space and used time slowdown and space cutting to destroy several of the attacking craft.
  • Allen returned to the ship and warned the crew that the attack was likely only a reconnaissance force and that they had been marked.

Ch. 413Mechanical tide

Allen and the crew fought off a vast swarm of black craft until Allen blocked a devastating cannon blast and Franky guided the Ark Maxim through a hidden force field. They escaped the attackers and entered Endless Vearth, where an astonishing sight awaited them.

  • Allen and the crew battled hundreds of black craft as the Ark Maxim’s shield weakened under relentless fire.
  • Allen ordered Franky to flee toward coordinates beyond the moon while matching the reactor output to a hidden force field’s frequency.
  • A larger, demon-faced warship fired a powerful beam at the Ark Maxim, and Allen absorbed it with Devour: Guixu.
  • Franky completed the frequency modulation, and the Ark Maxim crossed the force field, vanishing from the attackers’ radar and sight.
  • The black mechanical fleet withdrew after losing its target, while the crew realized they had entered Endless Vearth and stared in shock at what lay ahead.

Ch. 414Endless Vearth-Vanished Glory and Lingering Sparks

The Straw Hat Pirates entered Endless Vearth, finding a ruined lunar city beneath an artificial dome. Allen detected a faint sign of life and a running energy core inside a pyramid, and the group opened its sealed entrance to investigate.

  • The Ark Maxim passed through the force field and entered the decayed city of Endless Vearth.
  • Allen sensed a faint life signal and an energy core inside a silver pyramid at the city center.
  • The Straw Hat Pirates landed near the pyramid and approached its sealed entrance.
  • Robin recognized that the door's recess matched the star-chart tablet, and Allen fitted the tablet into it.
  • The door opened, and the Straw Hat Pirates entered the passage toward the source of the life signal.

Ch. 415The Last Watcher

The Straw Hat Pirates reached the moon city’s energy core and met Laisesu, the last Watcher of the Moon Clan, who revealed the threat posed by the Observers. After passing vital knowledge and power to Allen and Robin’s Star Map Tablet, Laisesu vanished, leaving the crew tasked with uniting resistance across the stars.

  • The Straw Hat Pirates descended into the city’s central hall, where they found Laisesu seated beneath the Star Core.
  • Laisesu identified himself as the Moon Clan’s last Watcher and warned that the Observers had sent Cleaners to destroy the refuge.
  • Laisesu explained that the Observers harvested the source and possibilities created by life, and had sown Seeds of Chaos such as the Dark Abyss to weaken civilizations.
  • Laisesu said Allen’s light could resonate with the Star Core and recognized Luffy as an inheritor of the will of D.
  • Laisesu sent part of the Star Core’s power and information into Robin’s Star Map Tablet and enveloped Allen with its origin imprint and data about the Observers.
  • Laisesu dissolved into the Star Core after urging the crew to find the other Sparks and unite those resisting the Observers.

Ch. 416A new course and an approaching shadow

After receiving Laisesu’s legacy, Allen learned that the star chart could lead the Straw Hat Pirates to resistance groups, with their nearest destination in the Jade Nebula. When Allen sensed a Purge Protocol fleet approaching the moon, the crew chose to destroy the ruins and star core to keep them from the Observers and disrupt the fleet as they escaped.

  • Allen completed his initial reception of the Star Core Mark and learned that Laisesu’s database contained information about the Purge Protocol and possible resistance groups.
  • Robin confirmed that the completed star chart marked several resistance-related locations, including the nearest one in the Jade Nebula.
  • Allen sensed that a Purge Protocol fleet would reach lunar orbit in three hours and warn the crew of a larger operation.
  • Allen proposed activating the ruins’ self-annihilation sequence to destroy the star core and damage the approaching fleet, and Luffy agreed.
  • The Straw Hat Pirates returned to the Ark Maxim to prepare to withdraw while Allen stayed behind to guide the star core’s energy.

Ch. 417Moonfall and starlight

Allen activated the lunar ruins’ final command, Moonfall, destroying the hidden city and the Purge Protocol fleet’s vanguard as the Ark Maxim escaped. The Straw Hat Pirates mourned the lost civilization and set course for the Jade Nebula.

  • Allen connected with the star core and activated the Moonfall command in the ruins’ central hall.
  • Nami ordered Franky to send the Ark Maxim through the force field at maximum speed as the lunar city overloaded.
  • The Moonfall explosion destroyed Endless Vearth and obliterated the Purge Protocol fleet’s vanguard, while the blast’s shock waves battered the Ark Maxim.
  • Chopper said goodbye to the moon, and Robin honored the civilization that had protected it to the end.
  • Allen told the crew to continue onward, and Nami set the Ark Maxim’s course for the Jade Nebula.

Ch. 418Jade Nebula-the frontier of life and conflict

The Straw Hat Pirates reached Qingyang II in the Jade Nebula and found an alliance of local species fighting silver-gray robots with ties to the Purge Protocol. After deciding to help, they intervened from the Ark Maxim, beginning their first battle in the nebula.

  • The Ark Maxim arrived at the Azure Sun system and identified Qingyang II as the source of a Resistance signal.
  • Allen detected several conflicts on the planet, and the crew used the ship’s camouflage to investigate the fiercest battle.
  • The crew saw silver-gray robots attacking an allied force of plant-like, rock-like, and lizardman-like beings.
  • Luffy urged the crew to help, and Allen ordered the Ark Maxim to support the locals while Luffy, Zoro, and Sanji prepared to fight on the ground.
  • The Ark Maxim revealed itself and destroyed several robots with its secondary cannons, giving the local alliance renewed hope.

Ch. 419The battle of Qingyang: The Straw Hats arrive

The Straw Hat Pirates and Allen turned the tide of the battle on Qingyang II, destroying the robot legion and rescuing the native alliance. Chief Ogen thanked them and invited them to a shelter, warning that the Crystal Husk Empire’s patrols would soon arrive.

  • The Ark Maxim shielded itself from homing missiles and attacked the robot legion, while Luffy, Zoro, Sanji, Usopp, Chopper, and Brook joined the ground battle.
  • Allen identified and destroyed the robot commanders, disrupting the legion’s coordination and helping the Straw Hat Pirates and native alliance defeat the remaining robots.
  • Chief Ogen introduced himself as chief of the Forest Tribe of Qingyang II and thanked the Straw Hat Pirates for saving the free people.
  • Robin explained that they had followed a star chart in search of like-minded companions, and Ogen connected their arrival to an ancient prophecy.
  • Ogen invited the Straw Hat Pirates to a shelter and warned that patrols from the Crystal Husk Empire would arrive soon.

Ch. 420A gathering place for scattered sparks

The Straw Hat Pirates reached the Root of the Azure Sun refuge and learned how the Crystal Husk Empire oppressed Qingyang II’s scattered resistance. After Robin and Allen revealed their knowledge of the Observers, Chief Ogen agreed to summon the other refuge leaders to unite their forces.

  • Chief Ogen led the Straw Hat Pirates through the jungle tunnels to the underground Root of the Azure Sun refuge.
  • Chief Ogen and the other leaders explained that energy crystals sustained the refuge and that the Crystal Husk Empire captured locals for its purification factories.
  • Robin showed Chief Ogen the star chart and said the Straw Hat Pirates wanted to unite the resistance against the Crystal Husk Empire and the Observers.
  • Allen told the leaders about the Observers’ creation, the Dark Abyss, and the Straw Hat Pirates’ knowledge of the threat.
  • Chief Ogen called for the Red Rock, Marsh, and Wind Valley refuges to send their chiefs to a council.

Ch. 421Spark Alliance-the prelude to Azure Sun's counterattack

The Straw Hat Pirates persuaded Qingyang II’s resistance leaders to unite against the Crystal Husk Empire, forming the Qingyang Free Peoples Alliance. The alliance planned a counterattack targeting the Empire’s orbital station, with the pirates handling the space assault while the resistance staged a ground feint.

  • Chief Ogen gathered the major resistance leaders and explained the Straw Hat Pirates’ rescue, star chart, and warning about the Observers.
  • Molten Hammer Goron doubted the pirates, while Tide Whisperer Lan asked them to explain their intentions and abilities.
  • Luffy declared that he would fight the Empire, and Allen demonstrated his power as Robin and Nami showed evidence of their mission and capabilities.
  • Goron, Lan, and Wind Chaser Kai agreed to join forces with Ogen, establishing the Qingyang Free Peoples Alliance.
  • Lan identified the orbital monitoring station as a major threat, and Franky and Allen offered to destroy it with the Ark Maxim.
  • Goron agreed to lead a ground feint to draw away the Empire’s forces while the pirates attacked the orbital station.

Ch. 422Assault on the Firmament-The Fall of the Orbital Station

The Straw Hat Pirates and the Qingyang Free Peoples Alliance attacked the Eye of Qingyang during a brief gap in its defenses. Allen triggered the station’s destruction and stole its data, and the alliance celebrated the orbital station’s fall.

  • Franky and Nami discovered a three-minute surveillance gap during the Eye of Qingyang’s data synchronization and planned the assault.
  • Molten Hammer Goron, Tide Whisperer Lan, and Wind Chaser Kai launched ground diversions as the Ark Maxim approached the station under cover of a transport fleet.
  • Luffy, Zoro, Sanji, Usopp, and Franky fought through the station’s harbor defenses while Allen headed for the central control hub.
  • Allen froze the guards, seized control of the station, transmitted data about the Observers and Purge Protocol, and started the reactor overload and self-destruct sequences.
  • The Straw Hat Pirates escaped as the Eye of Qingyang exploded, prompting cheers from the resistance fighters on Qingyang II.

Ch. 423Farewell to Qingyang: A Voyage Across the Stars and a Parting Gift

After helping Qingyang II’s Free People Alliance defeat the Crystal Husk Empire’s forces, the Straw Hat Pirates accepted a gift and alliance from the liberated people. The Ark Maxim then set course for the Eleusis Star Cluster to investigate the Ancient Covenant and learn more about the Observers.

  • The free people celebrated their victory and thanked the Straw Hat Pirates at a feast.
  • Chief Ogen gave the crew a case of Qingyang Crystal Clusters as a parting gift, and Nami accepted it.
  • Robin marked the Qingyang Free Peoples Alliance as an ally and asked its leaders to answer a future call to arms.
  • The Straw Hat Pirates departed Qingyang II aboard the Ark Maxim as the free people watched them go.
  • Nami identified the Eleusis Star Cluster as their next destination, and the Ark Maxim headed deeper into the Jade Nebula.

Ch. 424The Eleusis Star Cluster, Undercurrents Beneath the Calm

The Ark Maxim uncovered the Crystal Husk Empire’s connection to the Purge Protocol and learned that the Eleusis Star Cluster could resist its scans. After passing the cluster’s entry screening, the crew entered its serene domain, where an elegant ship approached to make contact.

  • Robin and Allen analyzed the orbital-station data and found that the Crystal Husk Empire served the Sovereign Will, which answered to the Observers.
  • Robin reported that the Purge Protocol treated the Eleusis Star Cluster as a high-risk quarantine zone, and Allen suggested a powerful force there interfered with its scans.
  • The Ark Maxim reached the cluster and passed an energy-field screening that confirmed it had no Purge contamination.
  • The crew entered the orderly Eleusis Sanctuary Domain, while Allen and Robin sensed that its apparent peace concealed something.
  • A pearly white ship appeared beside the Ark Maxim and requested communication.

Ch. 425The Guardian Council, Memories and the Price

The Straw Hat Pirates reached Eleusis Prime and learned that its people had sacrificed their future to hide from the Observers. Chief Guardian Oriharu revealed that Eleusis could not join the fight, but guarded knowledge and a possible Key to understanding the Observers.

  • Echo guided the Straw Hat Pirates and Allen through the quiet crystal city to the Guardian Council Hall.
  • Chief Guardian Oriharu recognized the Star Map Stone and said Eleusis had sensed traces of the Purge and Dark Abyss.
  • Robin asked the Council for allies against the Observers, and the guardians explained that their ancestors had created the Absolute Order Field to escape the Purge Protocol.
  • Oriharu revealed that Eleusis had surrendered evolution, strong emotions, and change to maintain its equilibrium and avoid detection.
  • Luffy challenged the guardians for hiding instead of resisting, and Oriharu said they safeguarded the Observers’ origins and a possible Key to understanding them.
Arc 17 of 21
Arc 17 of 21