The Cursed Dual Katana (CDK) is one of the most powerful swords in Blox Fruits, offering high damage and unique dual-wield abilities. In this complete 2026 guide, we’ll walk you through every step to unlock it — from the level requirements and scroll trials to defeating the final boss. Whether you’re aiming for PvP or PvE, this guide will make the process clear and easy to follow.
Prerequisites for the Cursed Dual Katana
Before you can begin the journey to obtain the Cursed Dual Katana, your character must meet specific high-level requirements. This is a late-game Mythical sword, and the trials will not trigger unless you are prepared.
- Level Requirement: You must be at least Level 2200.
- Sword Mastery: You must have a minimum of 350 Mastery on both the Yama and Tushita swords. For tips on leveling your sword mastery efficiently, see our How to Get Instinct V2 in Blox Fruits guide.
Locating the Crypt Master
To start the quest, travel to the Floating Turtle in the Third Sea. Head to the back of the Mansion area to find the Crypt Master NPC.
Crypt Master: The essential quest NPC who guards the entrance to the scroll room behind the Mansion.
Once you speak with him, he will open the path to a building containing two pedestals. Each pedestal holds a scroll representing one of the legendary blades: the Tushita Scroll (Left) and the Yama Scroll (Right).
All Scroll Trials and Objectives
You must complete three trials for each scroll to collect six Alucard Fragments. These fragments are necessary to form the gem that unlocks the final boss door.
Scroll | Trial Name | Objective |
Tushita | Dock Legend | Talk to three Boat Dealers and select "Pardon Me." |
Tushita | Sense of Duty | Successfully complete a Pirate Raid at the Castle on the Sea. |
Tushita | Soulless | Defeat the Cake Queen boss to enter the Heaven Dimension. |
Yama | Pain and Suffering | Equip Yama and allow an NPC or player to kill you. |
Yama | Haze of Misery | Kill all NPCs marked with purple circles while the world is foggy. |
Yama | Fear the Reaper | Die to the Soul Reaper at Haunted Castle to enter the Hell Dimension. |
Tushita Scroll Trials (Left)
The Tushita trials focus on your interaction with the world and bosses. For Dock Legend, visit three different islands—such as Port Town, Hydra Island, and Floating Turtle—to speak with Boat Dealers. During the Soulless trial, defeating the Cake Queen in the Sea of Treats will teleport you to the Heaven Dimension. In this white-void area, you must light three torches and defeat the spawning enemies to return.
Yama Scroll Trials (Right)
The Yama trials are themed around death and misery. Haze of Misery is often considered the most difficult; the screen becomes foggy, and you must search various islands to find and eliminate NPCs marked with purple circles. For Fear the Reaper, you must use a Hallow Essence to summon the Soul Reaper at the Haunted Castle. Let the boss kill you to be transported to the Hell Dimension.
Haze of Misery: A world-state trial where a thick fog appears and the player must hunt marked enemies across the map.
The Final Boss: Cursed Skeleton
Once all six Alucard Fragments are collected, the scrolls will burn away. Interact with the pedestal to witness the fragments merging into the Alucard Gem. This gem unlocks the door to the inner sanctum.
Inside, you will face the Cursed Skeleton Boss. You must defeat this guardian using only the Yama or Tushita swords. Upon victory, the Cursed Dual Katana will be added to your inventory automatically.
Alucard Gem: A legendary artifact formed from six shards used to open the final boss chamber.
Frequently Asked Questions
How do I get the Cursed Dual Katana in Blox Fruits?
You must be Level 2200, have 350 Mastery on Yama and Tushita, and complete six specific trials from the Crypt Master's scrolls before defeating the Cursed Skeleton Boss.
What level do I need for Cursed Dual Katana?
The quest is locked until you reach at least Level 2200. You also cannot start the trials without 350 Mastery on your prerequisite swords.
Where is the Crypt Master located?
The Crypt Master is located in the Third Sea at the Floating Turtle island. You can find him standing at the back of the Mansion.
How do you complete Haze of Misery?
When the fog appears, travel to different islands and look for NPCs with purple circles around them. You must kill every marked NPC to complete the trial.
What are Alucard Fragments?
Alucard Fragments are quest items awarded after completing each trial. You need six of them to form the Alucard Gem and unlock the final boss.
Is Cursed Dual Katana a Mythical sword?
Yes, the Cursed Dual Katana is a Mythical rarity weapon, known for its extremely high damage and powerful dual-wield moveset.
