Spirit Stone is a mythical material in Sailor Piece tied to the Spirit Warrior (Goku) melee questline. It only drops from one source, sits behind a Sea 2 level gate, and is consumed from the inventory to clear the first Empyrean Training objective.
Quick answer: Travel to Blue Planet Island in Sea 2, defeat the Spirit Fighter NPCs near the raid area, and keep killing them until Spirit Stones drop. Three are required to consume for the first Spirit Warrior quest step.
Spirit Stone requirements before farming
You need Sea 2 access on your account. Spirit Fighters are tuned around level 16,000, so a lower-level character will struggle to kill them quickly enough for the drop rate to feel reasonable.
A luck-focused setup helps because Spirit Stone is a mythical-tier drop. Equipping Luckborn, a high-luck race, and any luck title or bloodline you have stacks the multipliers that determine whether the stone appears on a kill.
Where to farm Spirit Stones on Blue Planet
Blue Planet Island sits in the Second Sea. Use any teleporter or portal that lists Blue Planet as a destination. After arriving, walk forward from the spawn until you pass the raid NPC, then turn toward the cluster of weaker Spirit Fighter mobs grouped on the side of the island. They appear in tight packs of roughly five, which is what makes AoE clears so efficient.
The same NPCs drop Spirit Keys at a much higher rate. Keys are used to summon the Spirit Warrior boss on this island, so expect a stockpile of keys to build up long before stones become consistent.
Spirit Stone drop details
| Detail | Value |
|---|---|
| Item rarity | Mythical |
| Source | Spirit Fighter NPCs |
| Location | Blue Planet Island, Sea 2 |
| Recommended level | 16,000+ |
| Quantity needed | 3 (for Empyrean Training 1) |
| Use | Consumed from inventory |
| Boss drop credit rule | Deal at least 10% of boss HP |
The drop chance is intentionally low. Half-hour farming windows for a single stone are common even with a respectable luck setup. There is no hidden trick that bypasses the roll, only volume of kills and luck modifiers.
Efficient farming method
Step 1: Open the teleporter menu in Sea 2 and select Blue Planet Island. Move past the raid NPC and locate the Spirit Fighter pack near the quest giver.
Step 2: Equip a weapon with reliable area damage. Ice-based fruits, Quake, or any sword with a wide cleave move will tag all five fighters in the pack at once, which is the fastest way to maximize stone rolls per minute.
Step 3: Bind your strongest AoE ability to auto-cast if you plan to AFK farm. Stay inside the spawn ring so the mobs respawn directly on top of you.
Step 4: Periodically open your inventory and search for "spirit" to confirm stones are landing. Spirit Keys will appear frequently and look similar at a glance.
Step 5: Once you have three Spirit Stones, stop farming, since the first quest step only requires three consumed stones. Additional copies do not stack any further benefit at this stage.
How to use Spirit Stones for the Spirit Warrior questline
Spirit Stones are not turned in to an NPC. You consume them directly. Open the inventory, locate the stone, and click it to use. Repeat until three have been consumed. The Empyrean Training 1 objective updates the moment the third stone is used.
The questline continues from there with the Empyrean bloodline roll using Bloodline Stones farmed in Sea 2, followed by World Boss kills, and four successful 75-floor Crystal Defense runs. The Spirit Warrior (Goku) melee unlocks at the end of that chain.
Common reasons drops do not appear
- Killing only one or two fighters per pull instead of the full pack, which wastes respawn cycles.
- Farming without a luck build, which slows mythical rolls significantly.
- Joining a public boss fight without dealing at least 10% of the boss's HP, which removes you from the drop pool entirely.
- Confusing Spirit Keys with Spirit Stones in the inventory. Keys are common, stones are mythical, and named exactly "Spirit Stone".
Plan for a grind rather than a single short session. The drop math favors persistence, AoE clears, and a stacked luck loadout, and the moment three stones sit in your inventory the rest of the Spirit Warrior chain opens up.