How to Get Map Pieces in Sailor Piece (June 2026)

Map pieces in Sailor Piece are collectible items you need to unlock Sea 2. You must gather all 7 pieces by defeating open-world bosses in Sea 1. The process involves grinding boss kills with a random drop rate under 5%, so patience is key. This guide covers everything you need to know about obtaining all 7 map pieces efficiently.

What Are Map Pieces and Why You Need Them?

Map pieces are special items in Sailor Piece that unlock the path to Sea 2. Without all 7 pieces, you cannot progress beyond Sea 1. Each piece corresponds to a specific boss location across different islands in the game world.

You need all 7 map pieces to speak with the NPC at the starting area and trigger the Sea 2 unlock. This is a significant progression milestone that opens up new dungeons, enemies, and story content. Many players consider getting all map pieces one of the most challenging grinds in the game.

Prerequisites: Ancient Fragments Requirement

Before you can farm map pieces, you must complete the Ancient Fragments quest. This prerequisite requires you to gather a set amount of Ancient Fragments from various enemies throughout Sea 1. The quest is designed to ensure you have basic combat experience before tackling boss content.

Once you have the required Ancient Fragments, return to the NPC to complete the quest. Only after this can map pieces start dropping from bosses. If you are not getting any drops despite multiple boss kills, double-check that you have completed this prerequisite.

How Map Piece Drops Work?

Map pieces drop randomly from open-world bosses in Sea 1. The drop rate is less than 5% per kill, meaning you will likely need to defeat each boss multiple times before seeing a drop. There is no way to increase this drop rate through items or abilities.

Each player has 5 assigned bosses out of the 14 total open-world bosses. Only these 5 bosses can drop map pieces for your character. The other 9 bosses will never drop pieces for you, regardless of how many times you defeat them. This assigned boss system is why many players experience confusion about drops.

You cannot get multiple map pieces from the same boss. Once a boss drops a piece for you, that specific boss will not drop another piece. You must get each of your 7 pieces from 7 different bosses within your 5 assigned. This means you need to strategically choose which bosses to focus on.

The 7 map pieces do not correspond to specific numbered bosses. Rather, pieces 1 through 6 come from specific named bosses, while Map Piece 7 drops from whichever assigned boss has not yet dropped a piece for you. If you have 5 assigned bosses but need 7 pieces, you will need to get 2 pieces from bosses that drop duplicate pieces.

Which Bosses Drop Map Pieces?

Open-world bosses across Sea 1 islands are the only sources for map pieces. Here are the 7 map pieces and their corresponding boss locations that can drop them:

Map Piece 1 drops from Excalibur Gilgamesh at Shibuya Station. Map Piece 2 drops from Soul Reaper at Sailor Island. Map Piece 3 drops from Gojo Boss at Hollow Island. Map Piece 4 drops from Qin Shi at Shinjuku Island. Map Piece 5 drops from the boss at Academy Island. Map Piece 6 drops from the boss at Slime Island. Map Piece 7 drops from a random assigned boss based on your character progress.

The key is to focus on your 5 assigned bosses. If a boss is not assigned to your character, it will never drop a map piece no matter how many times you defeat it. Players in the community recommend tracking your assigned bosses carefully to avoid wasting time on bosses that cannot drop pieces for you.

Which Bosses Do NOT Drop Map Pieces?

Boss Rush bosses do not drop map pieces. The bosses encountered in Boss Rush mode are separate from open-world bosses and have no map piece drops. Many players spend time in Boss Rush thinking it counts toward map piece farming, but it does not.

Infinite Tower bosses also do not drop map pieces. Despite being challenging encounters with valuable rewards, they are excluded from the map piece drop table. This is a common point of confusion because Infinite Tower feels like end-game content.

Dungeon bosses do not drop map pieces either. Any boss found within dungeon content is excluded from the map piece farming pool. Focus only on open-world bosses for map piece drops.

Tips for Faster Farming

Use a damage-focused build when farming bosses. Higher damage means faster kill times, which translates to more boss attempts per hour. This significantly speeds up the grinding process. Consider investing in weapons and accessories that boost your damage output.

If you are not getting drops from one of your assigned bosses after many kills, try switching to a different assigned boss. Some players report better luck cycling through their different assigned bosses rather than focusing on just one. This might be due to how the game assigns random drops across your available pool.

Keep track of which bosses have already dropped a piece for you. There is no in-game tracker, so you need to remember or note down your progress manually. A simple spreadsheet or note-taking app can help you avoid repeating boss kills unnecessarily.

Team up with other players when possible. While map piece drops are personal and only count for your character, having allies can help you defeat bosses faster and survive longer in challenging encounters.

Frequently Asked Questions

Summary

Getting map pieces in Sailor Piece requires defeating open-world bosses in Sea 1. Each player has 5 assigned bosses out of 14 total, and only those 5 can drop pieces. The drop rate is under 5% and is completely random, so be prepared for a grinding session.

Focus on your assigned bosses, use a damage build for faster kills, and keep track of your progress. Remember that dungeon bosses, Boss Rush bosses, and Infinite Tower bosses do not drop pieces. Once you collect all 7 map pieces, return to the NPC to unlock Sea 2 and access new content.