Re:AOPG Haki Unlock Guide

Haki is the deepest progression system in Re:AOPG. There are eight Haki types — Armament, Observation, Conqueror’s, Advanced Armament, Advanced Observation, Internal Armament, Future Sight and King’s Haki — and each one unlocks a new combat tier. This page walks through every unlock, every trainer and every requirement.

Haki Types at a Glance

Haki	Requirement	Trainer	Sea
Armament	700K Beli	Rayleigh	First
Observation	100 Haki	Auto-unlock	First
Conqueror’s	1.5% drop	The Boss (Arena)	Second
Advanced Armament	1,700 Haki	Zou trainer	Second
Advanced Observation	1,500 Haki	Zou / Ruined Kingdom	Second
Internal Armament	2,500 Haki	New Zou trainer	Third
Future Sight	2,000 Haki	Ruined Kingdom	Second/Third
King’s Haki	4,500 Haki + Conqueror’s + Internal + Future Sight + 3× Big Mom / Shanks / Kaido / Blackbeard kills	Endgame chain	Third

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Armament Haki

Trainer: Rayleigh on Random Wilderness (First Sea). Cost: 700K Beli. Effect: +1 Haki per training round. Train repeatedly to level Armament.

Armament unlocks the basic damage boost against tough enemies and is the prerequisite for Advanced Armament.

Observation Haki

Observation unlocks automatically at 100 Haki. There is no trainer cost — just keep training Armament until the Observation quest triggers. Observation gives +0.5s prediction per 100 Haki points.

Conqueror’s Haki

Trainer: The Boss on Arena Island (Second Sea). Drop rate: 1.5% per clear. Effect: Unlocks full damage against the World Boss. Without Conqueror’s, your damage is capped at ~25%.

Conqueror’s is the longest grind — most players need 50-100 clears to land it.

Advanced Armament

Trainer: Zou Island Advanced Armament NPC (Second Sea). Requirement: 1,700 Haki. Effect: Unlocks the next damage tier for Armament users.

Advanced Armament is the bread-and-butter Sea 2 build buff.

Advanced Observation

Trainer: Zou Island or Ruined Kingdom Advanced Observation NPC (Second Sea). Requirement: 1,500 Haki. Effect: Extends prediction window.

Most players train Advanced Observation in parallel with Advanced Armament.

Internal Armament

Trainer: New Zou Island (Third Sea). Requirement: 2,500 Haki. Effect: Unlocks the top-tier Armament damage.

Internal Armament is the prerequisite for King’s Haki.

Future Sight

Trainer: Ruined Kingdom (Second Sea, late-game). Requirement: 2,000 Haki. Effect: Adds 2s prediction window for the toughest raid bosses.

Future Sight is the prerequisite for King’s Haki.

King’s Haki

King’s Haki is the endgame Haki chain. Requirements:

• 4,500 Haki total.
• Conqueror’s Haki unlocked.
• Internal Armament unlocked.
• Future Sight unlocked.
• 3× kills of Big Mom (Whole Cake Island).
• 3× kills of Shanks (Red Hair Island — World Boss rotation).
• 3× kills of Kaido (Wano).
• 3× kills of Blackbeard (Pirates Paradise).

The full chain takes most players 2-3 months of dedicated grinding.

Haki Trainer Locations

• Random Wilderness (Sea 1) — Rayleigh, Armament trainer (700K Beli).
• Arena Island (Sea 1/2) — The Boss, Conqueror’s Haki drop (1.5%).
• Zou Island (Sea 2) — Advanced Armament trainer (1,700 Haki) + Advanced Observation trainer (1,500 Haki).
• Ruined Kingdom (Sea 2) — Advanced Observation (1,500 Haki) + Future Sight (2,000 Haki).
• New Zou (Sea 3) — Internal Armament (2,500 Haki).
• Onigashima (Sea 3) — NPC Andre, the Race V4 / King’s Haki (V4) trainer. Gates all endgame Race V4 unlocks and requires 4,500 Haki Stats + Armament V3 + Observation V3 + Conqueror’s + 3 Yonko kills (no Poneglyph required).
• Shanks Island (Sea 3) — Full-Body Haki upgrader NPC, four-stage chain from Stage 1 (5,000 stats, 10K gems, 1 Pica) to Stage 4 (7,000 stats, 30K gems, 4 Pica).
• Wano (Sea 3) — Kaido boss (King’s Haki prerequisite).
• Pirates Paradise (Sea 3) — Blackbeard boss (King’s Haki prerequisite).
• Red Hair Island (Sea 3) — Shanks (World Boss rotation).
• Whole Cake Island (Sea 3) — Big Mom boss.

Full-Body Haki (V4) Walkthrough

Full-Body Haki is the post-King’s Haki capstone. It is a four-stage chain that scales your HP and damage with each stage, gated by Haki Stats, Gems and Pica dungeon runs. The upgrader NPC is on Shanks Island (Sea 3), past the Sengoku Domain dock.

Stage 1 — First Vessel

• Haki Stats — 5,000.
• Gems — 10,000.
• Pica dungeon clears — 1.
• Effect — 2.3× max HP multiplier, 1.9× damage multiplier.

This is the first HP scaling tier in the game and the minimum bar for the Multiverse Sea endgame content. The Pica dungeon is on the Pica island east of Shanks Island — bring a 2-3 man crew for the first clear.

Stage 2 — Sustained Vessel

• Haki Stats — 5,800.
• Gems — 15,000.
• Pica dungeon clears — 2 (cumulative).
• Effect — 2.8× max HP, 2.3× damage.

Most crews clear Stage 2 within a week of grinding Pica. The upgrade also unlocks the second cosmetic overlay on the Full-Body Haki aura.

Stage 3 — Overflow Vessel

• Haki Stats — 6,400.
• Gems — 22,000.
• Pica dungeon clears — 3 (cumulative).
• Effect — 3.4× max HP, 2.7× damage.

Stage 3 is where Full-Body Haki starts to compete with Lunarian race for raw damage. The Haki Stat jump from Stage 2 to Stage 3 is the largest single grind, so most crews spend 2-3 weeks farming Haki Stat books before attempting.

Stage 4 — Apex Vessel

• Haki Stats — 7,000.
• Gems — 30,000.
• Pica dungeon clears — 4 (cumulative).
• Effect — 4.0× max HP, 3.2× damage.

Stage 4 is the max-tier Full-Body Haki and the final upgrade available as of patch 5.4. Combined with a Lunarian race and a Mythic Devil Fruit, Stage 4 Full-Body is the highest theoretical damage build in the game. Most players need 4-6 weeks of focused farming to land all four stages.

Quick Tips

• The Pica dungeon has a 30-minute respawn timer and drops Pica essence at 2% per clear. Save the essence — it feeds the cosmetic set.
• Haki Stat books drop from any Sea 3 raid boss. The drop rate is roughly 1% per clear.
• The upgrader NPC only accepts one transaction per server-time day. Plan ahead.

Related Hubs

• Bosses hub — Big Mom, Shanks, Kaido, Blackbeard bosses.
• Tier list builds — best Haki builds.
• Seas hub — when each Sea unlocks new Haki.
• Updates hub — recent Haki patches.