If you are progressing through Sailor Piece, one of the important early quests you will encounter is the Slime Collection quest. This quest requires you to locate seven hidden Slime Pieces scattered across different islands in the game.
Completing this quest unlocks the ability to craft Slime Keys, which are required for important content later in the game including spawning the Rimuru boss. Because the pieces are hidden in different locations, many players struggle to find them all.
This guide explains how to start the quest, where to find every Slime Piece, and what to do after collecting them.
How to Start the Slime Collection Quest
Before you can collect any Slime Pieces, you must first start the quest.
Step 1: Go to Slime Island
Travel to Slime Island, which contains a group of buildings near the center of the area.
Step 2: Find the Slime Key Crafter NPC
Inside the building cluster, you will find the Slime Key Crafter NPC.
Step 3: Accept the Slime Collection Quest
Interact with this NPC and accept the Slime Collection quest. This quest asks you to locate seven Slime Pieces hidden across several islands.
Once the quest is active, you can begin collecting the pieces.
SEE ALSO:
All Slime Piece Locations in Sailor Piece
Below are the exact locations of all seven Slime Pieces in Sailor Piece.
Slime Piece #1 – Desert Island
Travel to Desert Island.
Look for the large dragon fossil skeleton on the map. The Slime Piece is hidden between the bones of the fossil.
Slime Piece #2 – Snow Island
Go to Snow Island.
Find the igloo area with two nearby shacks. Run past the shacks and move toward the tree located in front of them.
The Slime Piece is hidden behind this tree.
Slime Piece #3 – Starter Island
Use the portal to return to Starter Island.
Locate the building on your right side when you arrive. Climb to the roof of the building, then look toward the nearby tree.
You will find the Slime Piece on a tree branch next to the roof.
Slime Piece #4 – Jungle Island
Teleport to Jungle Island.
Search for a watchtower-like structure in the area.
The Slime Piece is located on top of the roof of this watchtower structure.
Slime Piece #5 – Shibuya Station
Travel to Shibuya Station Island.
Run to the far end of the island and pass the Yuji boss location.
Eventually you will find a building with black panels. The Slime Piece is hidden in the corner of this building.
Slime Piece #6 – Hueco Mundo
Use the portal to reach Hueco Mundo.
Once you arrive, look to your left side. You will see two tall towers near a domed structure.
The Slime Piece is hidden between the base of these towers.
Slime Piece #7 – Shinjuku Island
Teleport to Shinjuku Island.
Jump across the building on the right side until you reach a withered tree.
The final Slime Piece is located on this tree.
What Happens After Collecting All Slime Pieces
After collecting all seven pieces, a message will appear on your screen:
“Slime Quest Completed. Craft is now unlocked.”
This means you can now craft Slime Keys.
How to Craft Slime Keys
Once the quest is complete, return to the Slime Key Crafter NPC on Slime Island.
To craft a Slime Key, you will need:
| Item | Requirement |
|---|---|
| Slime Shards | 2 |
Slime Shards have a low drop rate and are mainly obtained by defeating enemies on Slime Island.
The best enemies to farm are:
• Slime Warriors (Level 8000)
These enemies drop:
• Slime Shards
• Money
• Experience
What Is the Slime Key Used For
The Slime Key has one main purpose in Sailor Piece.
It is used to spawn the Rimuru boss on Slime Island.
Defeating Rimuru can reward players with powerful items and materials used for crafting stronger weapons and abilities.
Tips to Collect Slime Pieces Faster
Here are some tips to complete the quest quickly.
Use Fast Travel Portals
Portals between islands allow you to reach locations faster instead of traveling manually.
Increase Movement Speed
Speed boosts make exploring islands easier and reduce travel time.
Look for Elevated Locations
Many Slime Pieces are hidden on trees, rooftops, or structures, so always check high places.
Final Thoughts
The Slime Collection quest in Sailor Piece is a simple but important mission that unlocks the ability to craft Slime Keys. While the seven Slime Pieces are spread across multiple islands, knowing their exact locations makes the quest much easier to complete.
Once you unlock Slime Keys, you can begin farming the Rimuru boss, which is an essential step toward obtaining stronger gear and progressing further in the game.

Nishant Singh is a gaming writer with a passion for Roblox and the Call of Duty franchise. He enjoys exploring new titles, sharing tips, and writing stories that bring the gaming world to life.