To get the Cursed Dual Katana (CDK) in Blox Fruits, reach level 2,200, obtain Yama and Tushita, and raise both swords to 350 mastery. Complete all six trials in their scrolls at the Crypt on Floating Turtle, then defeat the Cursed Skeleton Boss. The community guide reports that the boss drops CDK after defeat.
CDK requirements and where to start
The CDK quest is available in the Third Sea. You need to meet all three prerequisites before you can read the scrolls:
- Be level 2,200 or higher.
- Own Yama and Tushita.
- Have at least 350 mastery on each sword.
If you try to read a scroll before meeting the level or mastery requirements, the guide reports that the game displays: “The inscription is too hard to read…”
Go to Floating Turtle and find the Crypt Master by the large stone building on the hill behind the Mansion. Agree to enter the Crypt. There are two scrolls inside, one for Yama and one for Tushita. Hold the sword that matches the scroll whose trial you are attempting. Only one trial can be active at a time, but you can complete the two scrolls in either order. Each completed trial awards one Alucard Fragment.
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Complete the three Yama scroll trials
1. Pain and Suffering
Hold Yama and take 8,000–10,000 damage from an enemy or another player. The guide warns that damage may not register on the first attempt, so repeat the trial if necessary.
2. Haze of Misery
When the fog appears, find and defeat the NPC groups marked in purple. Search each island for its marked groups before moving on; some islands may have none. If a marked group fails to count, the guide recommends continuing through the marked enemies and checking progress.
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3. Fear the Reaper (Hell Dimension)
Use Hallow Essence to summon Soul Reaper, then let it defeat you to enter Hell Dimension. Light the three torches and defeat all spawned enemies, including Hell’s Messenger. After the gate opens, return to the Crypt and interact with the Yama scroll to burn it and register the trial as complete.
Complete the three Tushita scroll trials
1. Docks Legend
While holding Tushita, speak to Boat Dealers or Luxury Boat Dealers on three different islands. On the last page of the dialogue with the final dealer, choose “Pardon me.” Buying a boat does not complete this trial.
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2. Sense of Duty
Hold Tushita and defeat a Pirate Raid NPC at Castle on the Sea.
3. Soulless (Heaven Dimension)
Land a hit on Cake Queen. When the song begins, defeat her within two minutes to enter Heaven Dimension. Light the torches and defeat the enemies around them, including Heaven’s Guardian. Then return to the Crypt and interact with the Tushita scroll to burn it and register completion.
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Defeat the Cursed Skeleton Boss
After both scrolls have burned, interact with the pedestal in the Crypt. The guide says this forms the six Alucard Gem shards and opens the wall to the level 2,025 Cursed Skeleton Boss. The boss can only be damaged with Yama or Tushita, so equip one of those swords for the fight. The guide reports a 100% CDK drop after the boss is defeated, following a short delay.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.If you still need Yama or Tushita
Getting Tushita
The current Tushita puzzle guide describes a route that starts at level 2,000, with rip_indra summoned and alive. Enter through the Secret Temple at Hydra Island, take the Holy Torch to Floating Turtle, and light five torches in order within five minutes. Then defeat Longma; the guide says you must land the final blow to receive Tushita.
Getting Yama
Yama is also required, and the guide confirms that both Yama and Tushita must reach 350 mastery to unlock the CDK puzzle. Third Sea access requires level 1,500, but the Yama acquisition sequence is not detailed here, so consult the current in-game route or a current Yama guide for how to obtain it.
Plan the trials around travel and interference
There is one documented route to CDK, but you can choose which scroll to work on first. Start with the trials that fit your current island route and readiness. Fast travel can help with island-spanning objectives, and a private server may reduce interference from other players. The guide does not provide a measured time comparison for different orders or travel methods.
These mechanics come from community-maintained Blox Fruits wiki guides, not developer documentation. The CDK puzzle page was marked updated October 6, 2026, the Tushita puzzle page September 24, 2026, and the Yama page was reported updated in September 2026; all were accessed October 8, 2026. Game updates or bugs may change how a step behaves.
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