Strongest Shinobi is a late-game melee fighting style added to Sailor Piece in Update 7.0. Inspired by Madara Uchiha, it features shadow clones, flame attacks, and a full Susano transformation. It ranks among the top combat specs in the game, competing with — and often outperforming — Gilgamesh and Blessed Maiden. Getting it requires farming a 2-billion-HP boss on Ninja Island and turning in a specific set of rare drops to an NPC.
Quick answer: Teleport to Ninja Island, collect 40,000 Gems, 1 Path Fragment, 3 Eternal Cores, 8 Battle Sigils, 15 Power Remnants, and the Battlefield Warlord title from the Strongest Shinobi boss, then trade them all to the Strongest Shinobi Seller NPC on the left side of the island near the shore.
Strongest Shinobi requirements
You purchase the fighting style from the Strongest Shinobi Seller NPC on Ninja Island. To reach the island, use any Teleport Portal and scroll to the bottom of the destination list. Once you spawn, head toward the giant tree and turn left to find the NPC near the shoreline. Every material except Gems drops exclusively from the Strongest Shinobi boss on the same island.
| Material | Quantity | Drop Chance (from boss) |
|---|---|---|
| Gems | 40,000 | Earned from quests, chests, bosses, and codes |
| Path Fragment | 1 | ~0.4% |
| Eternal Core | 3 | ~1% |
| Battle Sigil | 8 | ~2% |
| Power Remnant | 15 | ~4% |
| Battlefield Warlord title | 1 | ~1.15% (100-kill pity) |
Strongest Shinobi boss — Spawn, HP, and drop table
The Strongest Shinobi boss (referred to as "Moa" in-game) spawns on Ninja Island roughly every 5 minutes and 45 seconds. It has 2,000,000,000 HP, making it a true endgame encounter. A chat notification appears when the boss is active, and a floating timer marks its spawn point on the opposite end of the island from the teleport arrival spot.
| Drop | Chance |
|---|---|
| Race Reroll | 100% |
| Trait Reroll | 100% |
| Boss Ticket | ~99.45% |
| Void Reaver (Artifact) | ~99.45% |
| Dungeon Key | ~87% |
| Power Remnant | ~4% |
| Battle Sigil | ~2% |
| Eternal Core | ~1% |
| Path Fragment | ~0.4% |
| Battlefield Warlord title | ~1.15% (pity at 100) |
Only the Battlefield Warlord title has a pity counter. Every other rare material relies purely on RNG, so expect a lengthy grind — especially for Path Fragments and Eternal Cores.
Tips for farming the boss faster
With 2 billion HP, each kill can take a while if your build isn't optimized. Equip your strongest swords or combat specs and make sure your Skill Tree, stats, and accessories are fully upgraded before you start farming. Blessings, races, clans, and traits that boost luck will improve your odds of landing the rarer drops on each kill.
An AFK farming method exists for players who have Sukuna V2. Stand on the elevated black platform near the boss spawn area and activate Sukuna V2's F auto ability. The boss will take continuous damage while you remain safely positioned above its attack range.
Buying Strongest Shinobi with Robux
If you'd rather skip the boss grind entirely, the Strongest Shinobi is available in the in-game shop for 1,399 Robux as a standalone purchase. A bundle that also includes the Atomic Weapon and Abyssal Empress is available for between 2,399 and 3,349 Robux, depending on the package. Purchasing through the shop gives you the spec immediately — no materials or title needed.
Unlocking the F move (Mastery)
Obtaining Strongest Shinobi gives you access to four abilities (Z, X, C, and V), but the F move — a Susano summon that boosts all ability damage and deals an AOE burst — requires a separate unlock. A second NPC handles this mastery step.
Step 1: Equip the Warlord Race on your character. The mastery NPC will not interact with you unless this race is active.
Step 2: Travel to Ninja Island and locate the mini Madara NPC. He stands near the hill behind the Strongest Shinobi Seller NPC, close to the edge of the island by the large tree.
Step 3: Interact with the NPC and submit the following materials to permanently unlock the F move.
| Requirement | Quantity |
|---|---|
| Strongest Shinobi (equipped) | 1 |
| Warlord Race (equipped) | — |
| Eternal Core | 5 |
| Battle Sigil | 10 |
Strongest Shinobi full moveset
| Key | Move | Base Damage |
|---|---|---|
| Z | Directional flame throw | 100 million |
| X | Shadow clone rush attack | 150 million |
| V | Meteor slam on target area | 250 million |
| C | Susano skeleton hands AOE slash | 350 million |
| F | Full Susano summon with AOE burst and damage buff | TBA |
The C ability deals the highest confirmed base damage at 350 million per hit, while the F move amplifies all other abilities on top of its own burst — making it the single most impactful upgrade for the spec.
Maximizing Strongest Shinobi damage
Once you have the full moveset unlocked, several systems stack to push your damage higher. Blessings can be applied from B4 up to B10. For passives, visit Judgement Island and spin for Executioner (pure damage) or Fortune (a balance of damage and luck). Allocate as many stat points as possible into Melee, and keep the Battlefield Warlord title equipped — it provides an 80% damage boost on its own.
Strongest Shinobi is one of the most investment-heavy fighting styles in Sailor Piece, but the payoff is a spec that can handle endgame bosses like True Aizen, Atomic, and Shadow Monarch without breaking a sweat. The grind is real, especially for Path Fragments sitting at a 0.4% drop rate, but the result is currently one of the strongest melee options in the game.