Atomic

Atomic is an upgrade weapon in Sailor Piece that builds on the Shadow sword. It is obtained on Lawless Island and requires 109 total boss material drops, 45,000 Gems, and the Eminence Incarnate title. You must have the Shadow sword in your inventory before you can start the upgrade. The materials all drop from the Atomic boss encounter.

Anime reference: Atomic Samurai from One Punch Man.

Required to Unlock Atomic

Visit the Atomic NPC (right corner) on Lawless Island. You must already own Shadow before you can upgrade.

Cost: 45,000 Gems.

Requirements: Title: Eminence Incarnate

Material	Quantity	Drop Rate	Where to Get
Atomic Omen	1	0.3% to 0.6%	Atomic Boss
Eminence Essence	3	0.7% to 1.15%	Atomic Boss
Shadow Remnant	9	2.85% to 4.5%	Atomic Boss
Magic Shard	16	8.75% to 12.5%	Atomic Boss
Abyss Sigil	80	-	Arena Fighters / Ninja enemies

All Atomic Boss Drops

Every item the Atomic boss can drop. Click an item to open its full wiki page.

Item	Drop Rate
Magic Shard	8.75%-12.5%
Shadow Remnant	2.85%-4.5%
Atomic Outfit	0.75%-1.3%
Eminence Essence	0.7%-1.15%
Atomic Omen	0.3%-0.6%
Eminence Incarnate Title	0.7%-1.35%

Moveset

Key	Cooldown	Effect
Z	-	Upward attack followed by ground smash and forward dash with hard hit.
X	-	Cyclone of slashes with descending smash.
C	-	Wide slash barrage, brief pause, massive smash attack.
V	-	Cutscene move that darkens area with devastating ground damage.
F	-	Dark purple domain with massive area attack (requires mastery).

F Move Mastery

Complete these mastery steps to unlock the F move:

Defeat Atomic Boss 20 times (Hard/Extreme)
Obtain Eminence clan
Reach Floor 51 on Infinite Tower 5 times

Reward: Unlock F move.

Evolution

Atomic evolves from Shadow.