So, how do you get CDK Blox Fruits? CDK means Cursed Dual Katana, a Mythical sword. To start the quest, you need level 2200 and 350 mastery on both Yama and Tushita. Then you finish six trials and defeat the Cursed Skeleton Boss. Last updated: October 14, 2026, so you can see how fresh this guide is.
Also, this CDK Blox Fruits guide covers the requirements, every trial step by step, the final boss, the moves and common problems. Because the game changes, check the in-game text before you start.
What Is CDK Blox Fruits?
According to the Blox Fruits Wiki, the Cursed Dual Katana is a Mythical sword from Update 17.3. It is a reward for finishing a puzzle that uses both Yama and Tushita. So, you cannot buy it from an NPC.
However, the wiki also says the community once ranked it among the best swords, but newer weapons now beat it in most areas. So, compare your options in our Blox Fruits tier list before you spend hours on the grind.
CDK Blox Fruits Requirements
Before you start, check this list. According to the wiki and Sportskeeda, you need:
| Requirement | What you need |
|---|---|
| Level | 2200 or higher |
| Yama | You own it, with 350 mastery or more |
| Tushita | You own it, with 350 mastery or more |
| Sea | Third Sea (Floating Turtle) |
Also, owning both swords opens the building, but without the level and the mastery you will only see “The inscription is too hard to read.” Getting Yama and Tushita is a separate quest, and RBLX Guide says Tushita needs the rip_indra True Form boss to be spawned.
How to Get CDK in Blox Fruits: Start the Puzzle
- First, go to the Crypt Master, next to the stone building behind the Mansion in the Third Sea.
- Next, agree to enter. The puzzle door is around the corner of the house.
- Then, find two scrolls inside. The Yama scroll has three trials, and the Tushita scroll has three trials.
- Finally, use the sword that matches each scroll’s name for its trials.
You can only do one trial at a time, and each trial gives an Alucard Fragment. Also, the wiki recommends a private server, because other players can interfere.
CDK Blox Fruits Yama Trials
Pain and Suffering
Hold Yama and take 8,000 to 10,000 damage from an enemy or a player. According to the wiki, it may take several tries. So, stay alive, but let the enemy hit you.
Haze of Misery
Your vision turns foggy, and purple marks appear on some groups of NPCs. Kill every marked NPC. Also, the marks show through walls, and some islands have several marked groups while others have none. So, clear each island before you move on. The wiki recommends the Portal fruit for travel and Advanced Instinct to spot enemies in the fog.
Fear the Reaper
First, accept the quest. Then, use a Hallow Essence to summon the Soul Reaper, and let it kill you. Next, you go to the Hell Dimension. There, light three torches, defeat the spawned NPCs, and beat Hell’s Messenger, a boss that uses awakened Dark. After that, a gate opens and you return to the scroll room. However, if you skip accepting the quest first, dying to the Soul Reaper will not work.
CDK Blox Fruits Tushita Trials
Docks Legend
Talk to three different Boat Dealers, or Luxury Boat Dealers, on three different islands. Then, on the last page of boats, choose “Pardon me.”
Sense of Duty
Kill an enemy NPC from a Pirate Raid at the Castle on the Sea. However, you only get the Alucard Fragment after the raid ends.
Soulless
Go to the Cake Queen and hit her once. Then, a song plays for about two minutes, and you must defeat her before it ends. After that, you go to the Heaven Dimension. There, light the torches, defeat the NPCs around each one, and beat Heaven’s Guardian, a boss that uses awakened Light. Finally, you return to the scroll room.
Final Boss: Cursed Skeleton Boss
After all six trials, talk to each scroll again, and the scrolls burn. Then, interact with the pedestal in the puzzle room. A wall opens and the Cursed Skeleton Boss, level 2025, appears. According to the wiki, only Yama or Tushita can damage it, and other weapons or fruits trigger an immunity message. Also, the wiki lists a 100% drop chance for the Cursed Dual Katana. However, RBLX Guide says the boss “does not always” drop it, so the sources disagree.
CDK Blox Fruits Moves and Mastery
| Move | Mastery | Energy | Cooldown | What it does |
|---|---|---|---|---|
| Revolving Ravager (Z) | 175 | 30 | 9 seconds | Forms a tornado that stuns and damages, then pulls enemies in. Hold it for longer damage. |
| Slayer of Goliath (X) | 375 | 60 | 14 seconds | A backflip, then a fast dash that slices for high damage. Hold it to go farther. |
Also, the wiki says Slayer of Goliath can bypass Dragon and Buddha protection, and that CDK ranks fourth for damage per click among swords. However, RBLX Guide notes that it cannot hit Blade users. So, check the numbers in the game, because balance changes.
Is CDK Blox Fruits Good for PvP?
Yes, but it needs skill. According to the wiki, it has high combo potential and Revolving Ravager is a good combo starter. However, the wiki lists clear weaknesses: every move can be tricked by Instinct, Slayer of Goliath has a small hitbox, and many players know how to counter it. So, mix up your timing, and use your fruit or fighting style to create an opening first. For example, you can pair it with the Gas Fruit Blox Fruits moves or with Kitsune Blox Fruits for speed.
Is CDK Blox Fruits Good for Grinding?
Not really. The wiki says Revolving Ravager is poor for grinding, because the released tornado does not drag many enemies. Also, you must already be deep in the Third Sea to unlock CDK. So, do not get it only for leveling. A strong fruit such as Dragon Fruit Blox Fruits will help you more with grinding.
Common CDK Blox Fruits Mistakes
- Starting too early. Reach level 2200 and 350 mastery on both swords first.
- Forgetting the quest. For Fear the Reaper, accept the quest before the Soul Reaper kills you.
- Using the wrong weapon on the boss. Use Yama or Tushita on the Cursed Skeleton Boss.
- Disconnecting mid-trial. The wiki says finished trials save, but progress inside a trial resets.
- Using a crowded server. A private server avoids other players interfering.
CDK Blox Fruits Quick Checklist
- Reach level 2200.
- Get Yama and Tushita, each with 350 mastery.
- Talk to the Crypt Master and enter the puzzle room.
- Finish the three Yama trials.
- Finish the three Tushita trials.
- Burn both scrolls and use the pedestal.
- Defeat the Cursed Skeleton Boss with Yama or Tushita.
- Raise CDK mastery to 175 and 375 to unlock both moves.
CDK Blox Fruits FAQ
What does CDK mean in Blox Fruits?
CDK means Cursed Dual Katana. It is a Mythical sword.
What level do you need for CDK?
You need level 2200 or higher to start the puzzle.
How much mastery do Yama and Tushita need?
Each sword needs at least 350 mastery.
Can you buy CDK with Beli or Robux?
No, you earn it by finishing the puzzle and beating the Cursed Skeleton Boss.
Is CDK still good?
It is still strong in skilled hands. However, the wiki says newer weapons outperform it in most areas.
Should You Go for CDK Blox Fruits?
CDK Blox Fruits is a long grind, so it suits players who enjoy sword combat and puzzles. However, it is not required, and newer weapons can be stronger. So, finish the mastery grind first, then do the six trials one at a time. Finally, use a private server and check the in-game text for each step.
Sources: because the game changes, the details on this page come from the Blox Fruits Wiki puzzle page, the wiki sword page, Sportskeeda and RBLX Guide. Also, you can check the game on its official Roblox page.
