If you are pushing into endgame content in Sailor Piece, the Atomic Sword (CID V2) stands out as one of the strongest weapons you can unlock. It delivers massive AoE damage, dominates boss fights, and speeds up dungeon clears—but getting it requires serious grinding and preparation.
This guide explains exactly how to unlock the Atomic Sword, farm its materials, and unlock its final F move efficiently.
Where to Find the Atomic Sword NPC
You can unlock the Atomic Sword on Lawless Island, a late-game location.
Here’s how to reach it:
- Use a teleport portal
- Travel to Lawless Island
- Move toward the corner of the island near the edge
- Look for a nameless NPC holding a sword
This NPC sells the Atomic Sword, but only after you meet all requirements.
Atomic Sword Requirements (Full List)
Before you can purchase the sword, you must collect several rare items and meet specific conditions:
- Eminence Incarnate Title
- Shadow Sword (CID V1)
- 45,000 Gems
- 1 Atomic Omen
- 3 Eminence Essence
- 9 Shadow Remnant
- 15–16 Magic Shards
- 80 Abyss Sigils
These requirements make the Atomic Sword one of the most grind-heavy unlocks in the game.
How to Farm Atomic Sword Materials Fast
Most required items come from a single source, which makes farming more efficient if done correctly.
Farm the Atomic Boss
The Atomic Boss (Cid) is your main target.
- Located at Lawless Island center
- Summoned using Abyss Sigils
- Higher difficulty = better drop rates
Key Drops from Atomic Boss
- Atomic Omen
- Eminence Essence
- Shadow Remnant
- Magic Shards
- Eminence Incarnate Title
Grinding this boss repeatedly is the fastest way to gather most materials.
How to Get Abyss Sigils
Abyss Sigils are essential for summoning the Atomic Boss and unlocking the Atomic Sword, so you must farm them consistently while progressing through late-game areas. The fastest way to collect them is by focusing on high-density enemy zones and clearing mobs efficiently.
Farm Abyss Sigils by:
- Defeating enemies on Lawless Island
- Fighting mobs on Ninja Island
- Using AoE attacks to clear groups quickly and increase drop chances
You need at least 80 Abyss Sigils to unlock the sword, and even more if you plan to farm the boss multiple times for required drops.
Increase Drop Rates (Important Tip)
Boost your luck before grinding:
- Reroll to Kitsune race (+Luck bonus)
- Equip boss titles
- Upgrade clan level
- Use runes or shop boosts
Higher luck increases your chances of rare drops, saving hours of grinding.
How to Get Shadow Sword (CID V1)
Before unlocking Atomic Sword, you must obtain the Shadow Sword.
Steps:
- Go to Dungeon Island
- Find the Shadow NPC on top of the building
- Submit required materials
Shadow Sword Requirements:
- Shadowborn Race
- 10,000,000 Money
- 15,000 Gems
- 1 Atomic Core
- 4 Shadow Essence
- 8 Void Seeds
- 20 Umbral Capsules
Most of these items come from Shadow Dungeon runs, so expect additional farming.
How to Unlock the Atomic Sword
Once you collect everything:
- Return to the NPC on Lawless Island
- Interact with the seller
- Submit all materials
- Pay the required Gems
You will unlock the Atomic Sword (CID V2) instantly.
Atomic Sword Moveset and Damage
The Atomic Sword focuses on high AoE damage and boss control.
Core Moves:
- Z Move – Upward strike + dash attack
- X Move – Cyclone slash combo
- C Move – Large AoE cyclone with delayed smash
- V Move – Cutscene attack with heavy burst damage
- F Move – Massive domain-based AoE destruction
Damage scales heavily with builds and upgrades, making this weapon extremely powerful in endgame.
How to Unlock the F Move (Full Power)
The F move unlocks after completing the Atomic Master questline.
Requirements:
- Defeat Atomic Boss 20 times (Hard/Extreme)
- Obtain Eminence Clan
- Reach Floor 51 in Infinite Tower (5 times)
After completing these tasks:
- You unlock the F move
- You gain a permanent damage boost
Is Atomic Sword Worth It?
The Atomic Sword is not just another upgrade—it defines your endgame strength and significantly boosts your damage output in high-level content. You should get it if you want top-tier AoE damage, regularly farm bosses and dungeons, or are building a high-damage setup focused on efficiency and fast clears.
However, you can skip it if you are still in the early or mid-game stages or if you do not want to commit to heavy grinding. For serious players aiming to maximize performance, this weapon stands out as one of the strongest tools in the game.
FAQs
How do you get Atomic Sword in Sailor Piece?
You can get the Atomic Sword in Sailor Piece by going to Lawless Island, finding the seller NPC, and meeting all requirements including Shadow Sword, 45,000 Gems, and rare boss drops like Atomic Omen and Eminence Essence.
What are the requirements for Atomic Sword Sailor Piece?
To unlock Atomic Sword Sailor Piece, you need Eminence Incarnate Title, Shadow Sword, 45,000 Gems, 1 Atomic Omen, 3 Eminence Essence, 9 Shadow Remnant, Magic Shards, and 80 Abyss Sigils.
How do you farm Abyss Sigils in Sailor Piece fast?
You can farm Abyss Sigils fast by defeating mobs on Lawless Island and Ninja Island using AoE attacks to clear groups quickly and increase drop chances.
Where is the Atomic Sword NPC in Sailor Piece?
The Atomic Sword NPC is located on Lawless Island near the edge of the island. You need to walk past the main path and find the nameless NPC holding a sword.
How do you unlock the F move for Atomic Sword?
You unlock the F move by completing the Atomic Master questline, which includes defeating the Atomic Boss multiple times, reaching Floor 51 in Infinite Tower, and unlocking the Eminence Clan.
Is Atomic Sword the best weapon in Sailor Piece?
Atomic Sword is one of the best endgame weapons in Sailor Piece because it offers massive AoE damage, strong boss control, and high scaling with builds.
Can you buy Atomic Sword with Robux?
Yes, you can buy Atomic Sword directly from the in-game shop for Robux, but most players prefer unlocking it through grinding to save currency.
How long does it take to get Atomic Sword in Sailor Piece?
It usually takes several hours to days depending on your luck, drop rates, and farming efficiency, especially when collecting rare boss materials.
Once Atomic Sword unlocked, it transforms your gameplay by giving you massive AoE damage, faster clears, and better boss performance. If you are aiming for true endgame power, this is one weapon you should not skip. Play Now!
