Run by the Chinjao Family out of Kano Country, the roughly thousand-strong Happo Navy is a New World pirate fleet. Now captained by Sai, it pledged itself to Luffy and joined the Straw Hat Grand Fleet.
Helmed by the Chinjao Family of Kano Country, this New World fleet swore itself to Luffy and enrolled under Sai as one vessel within the Straw Hat Grand Fleet. Command has descended through thirteen generations of the family, and by Orlumbus's count the force numbers close to a thousand hands. Its flagship, the Happosai, bears a white tiger figurehead and the word Happo across its main sail, trailed by seven lesser ships known as the Ipposai. Over the years the fleet weathered a run-in with Vice Admiral Garp and piled up a considerable hoard of riches.
Their hallmark discipline is the Hasshoken, a martial style that pushes vibrations into a physical strike to crack shields and guards while landing heavy blows. Those tremors can travel through a fist, elbow, kick, or even a headbutt, mesh well with Armament Haki, and echo one of the effects seen from the Gura Gura no Mi. In his prime the former leader Chinjao once bore a bounty of 542,000,000, while the sitting commander Sai showed his own mettle by beating Lao G of the Donquixote Pirates. The crew gained a further asset once Baby 5, formerly an officer among the Donquixote ranks, switched sides and married Sai.
For a full century the fleet hid treasure below the Jewel Ice Sheet. Chinjao ran things as the twelfth commander until Garp collapsed his renowned drill-shaped head, stripping away his power and his path to that buried wealth and driving him into retirement. Command then fell to his grandsons, with Sai taking the top post and Boo becoming lieutenant. During the Dressrosa events a punch from Luffy inadvertently reshaped Chinjao's drill head, and in thanks the old man placed the fleet under Luffy's protection. Once Sai used a kick to reshape that revived drill head and went on to beat Lao G, Chinjao proclaimed his grandson the rightful captain. Once Doflamingo fell, the fleet swore its loyalty to the Straw Hats, and Sai later married Baby 5 while calling off an arranged engagement to Uholisia.

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The Happo Navy is a New World pirate fleet run by the Chinjao Family of Kano Country, numbering close to a thousand hands and now sailing under Sai as part of the Straw Hat Grand Fleet.
No, Chinjao was a pirate captain who led the Happo Navy for generations; he clashed with Vice Admiral Garp of the Marines rather than serving among them.
Vice Admiral Garp collapsed Chinjao's renowned drill-shaped head, stripping away his power and his path to the fleet's buried treasure and driving him into retirement.
The Happo Navy is currently captained by Sai, who took over after his grandfather Chinjao stepped down, proving himself by defeating Lao G of the Donquixote Pirates.
The Happo Navy practices Hasshoken, a martial art that channels vibrations into strikes to crack an opponent's guard, a style that pairs well with Armament Haki.
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