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In the vibrant world of Sailor Piece, Atomic Core serves as an essential mid-game item pivotal for advancing to the formidable Shadow progression. As players journey deeper into the game, the significance of Atomic Core escalates, particularly due to its role in crafting Atomic, one of the most powerful swords available in the late game. This comprehensive guide will walk you through the steps to obtain Atomic Core and its various applications within Sailor Piece.
How to Acquire Atomic Core in Sailor Piece
Acquiring Atomic Core necessitates defeating the Shadow boss located in the Cid Dungeon. However, before you can engage in this endeavor, you must fulfill certain prerequisites to unlock the dungeon in Sailor Piece. This involves reaching level 5000, completing the Dungeon Discovery quest—which entails collecting six ancient puzzle pieces scattered across different islands—and defeating 25 bosses to gain access to the dungeons.
Once the dungeons are unlocked, follow these steps to effectively farm for Atomic Core:
- Access the Sailor Piece map via a portal and teleport to Dungeon Island.
- Interact with the NPC and hit the Spawn button next to Cid Dungeon.
- Every fifth level triggers the appearance of a Shadow boss, which has a chance to drop Atomic Core.
- Successfully defeating the Shadow boss increases your chances of obtaining Atomic Core.


In addition to farming, players can also explore trading opportunities to acquire Atomic Core. Given that it is a mythical item with a low drop rate, ensure to carefully evaluate trade values before proceeding.
Effective Strategies for Rapid Farming of Atomic Core
For players eager to expedite their Atomic Core farming, assembling an optimal damage build is key. However, luck also plays a significant role in increasing the likelihood of item drops. Clearing higher difficulty levels of the Cid Dungeon can yield greater amounts of Atomic Core.
To enhance your luck, consider utilizing titles within Sailor Piece and progressing through the Skill Tree. Moreover, adopting the King of Heroes melee style can facilitate efficient AFK farming in this dungeon setting.

Utilization of Atomic Core in Sailor Piece
Atomic Core plays a vital role in both Sailor Piece Ascension 5 and the creation of the Shadow Sword. Below are its uses:
- Shadow: To unlock the Shadowborn Race, you’ll need 10M Money, 15K Gems, 1 Atomic Core, 4 Shadow Essences, 8 Void Seeds, and 20 Umbral Capsules.
- Ascension 5: Players must reach Level 8000, eliminate 750 NPCs, defeat 150 bosses, utilize abilities 750 times, deal 5 billion damage, and clear the Shadow Dungeon (Hard) 10 times, in addition to collecting 2 Hog Fragments and 2 Atomic Cores.
That covers the essentials of obtaining and utilizing Atomic Core in Sailor Piece. Were you able to unlock the formidable Atomic Sword after acquiring the Shadow Sword? Share your experiences in the comments section!
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