How to Get Ghost Keys in Universal Piece Guide

Ghost Keys are one of the most important items you’ll need in Universal Piece, especially if you’re trying to unlock advanced systems like the System Breaker. These keys open up the path to several high-value bosses and items—including the King of Curses and Red Soul farming—so if you’re wondering where to get Ghost Keys and how to farm them effectively, this guide has everything you need. Also check out our Universal Piece Codes Guide.

What Are Ghost Keys Used For?

Before we get into the farming methods, here’s a quick breakdown of why Ghost Keys matter:

• Used to summon the King of Curses boss on Bones Island
• Essential for obtaining Chickens, which are then used to open the Red Knight Gate
• Required for progressing into the System Breaker Trial

Basically, Ghost Keys are the starting point of a farming chain that eventually leads to high-tier gear and power systems.

All Ways to Get Ghost Keys in Universal Piece

1. Boss Drops

Ghost Keys can be obtained by defeating specific bosses. These are your main farming targets:

• System Breaker Boss
• Dual Swordmaster Boss

These bosses have a chance to drop Ghost Keys when defeated. While the exact drop rate isn’t publicly listed, you can expect to fight them multiple times before you consistently see keys drop.

Tip: If you’re farming for System Breaker anyway, you’ll likely collect a few Ghost Keys as part of the process.

2. Fishing Method (Recommended for Casual Farming)

If you don’t want to rely on RNG-heavy boss fights, there’s an alternative—fishing.

• Head to any area that allows fishing.
• Cast your rod and wait.
• There’s a random chance to fish up Ghost Keys and even Chickens.

While this method still relies on luck, it’s a chill and low-risk option. Players have reported getting both Chickens and Ghost Keys within a few minutes of fishing, making it a solid backup strategy or something to do in-between cooldowns.

Pro Tip: Use any fishing boosters or bait (if available) to increase your chances of catching rare items like Ghost Keys.

3. Boss Farming Loops

If you’re running a farming loop for multiple items (Ghost Keys, Chickens, Red Souls), you can streamline your gameplay by:

• Starting with boss runs (System Breaker and Dual Swordmaster)
• Using fishing as a downtime activity
• Defeating King of Curses after getting a Ghost Key

This creates a consistent grind loop that feeds into unlocking System Breaker, Chickens, and other high-level content without wasting time.

Ghost Keys may seem like a small part of the game at first, but they’re essential to unlocking some of the most rewarding challenges and abilities in Universal Piece. Whether you prefer grinding bosses or relaxing with fishing, you’ve got options to farm them consistently. Stick with it, manage your farming routes well, and you’ll always have the keys needed to push further into the game’s high-tier content.