01
Guide section
Observation Haki
Unlock path: Desert Island.
Requirement snapshot: 250K money and 300 gems.
Why it matters: starts with 5 dodges and scales higher, which makes both bossing and questing safer.
02
Guide section
Armament Haki
Unlock path: Snow Island.
Requirement snapshot: 250K coins, 250 gems, and the trainer questline.
Why it matters: begins as a large damage boost and stays relevant for the rest of progression.
03
Guide section
Conqueror Haki
Unlock path: Shibuya Station era.
Requirement snapshot: Observation 25, Armament 50, and a Conqueror Fragment.
Why it matters: adds permanent late-game scaling instead of just quality-of-life power.
04
Guide section
Practical order
Get Observation when Desert opens.
Prioritize Armament as soon as Snow becomes realistic.
Treat Conqueror as a mid-game to late-game project after your basic route is stable.
More Sailor Piece guides
Sailor Piece Beginner Guide
Beginner checklist, best starter picks, and the mistakes that slow Sailor Piece accounts down the most.
Fast Leveling Route
Island order, quest swaps, and the points where the Sailor Piece route changes from pure XP into real build progression.
Best Starter Loadout
Best starter fruit, sword, melee, race, and accessory picks for Sailor Piece.
Runes and Dungeons Guide
How Shadow Dungeon, Rune Dungeon, and the late Double Dungeon path fit into Sailor Piece progression.