Cursed Dual Katana
Cursed Dual Katana (often shortened to CDK) is a Mythical sword from the Third Sea. The Cursed Skeleton Boss drops it at the end of a long puzzle that needs level 2200 and both Yama and Tushita at 350 mastery.
In return you get very high damage, a tornado-and-stun starter on Z and a long dash on X, and moves that can hit more than one enemy. It cannot damage players using the Blade fruit.
Cursed Dual Katana

Quick questions about Cursed Dual Katana
What moves does Cursed Dual Katana have?
Cursed Dual Katana moves, mastery and Instinct
Two slashes, a spinning slash, then a crossing slash as the fourth hit. There is no forward dash in the chain.
The view zooms out as you spin up a red and black tornado that stuns and damages anything near you. Let go and the tornado is sent forward, catches and drags an enemy in its path, then blows up and flings targets back toward you. Hold the button instead and the tornado stays where it is for a while and deals extra damage.
A backflip, then you cross both swords and dash at the enemy at high speed, slicing it for high damage. Holding the button carries you further and adds damage. A target that is hit takes a second, slightly weaker explosion that knocks it back, and sees a big spinning X over its screen. The move gets past the protection from Dragon, and past some Buddha transformations.
Two slashes, a spinning slash, then a crossing slash as the fourth hit. There is no forward dash in the chain.
The view zooms out as you spin up a red and black tornado that stuns and damages anything near you. Let go and the tornado is sent forward, catches and drags an enemy in its path, then blows up and flings targets back toward you. Hold the button instead and the tornado stays where it is for a while and deals extra damage.
A backflip, then you cross both swords and dash at the enemy at high speed, slicing it for high damage. Holding the button carries you further and adds damage. A target that is hit takes a second, slightly weaker explosion that knocks it back, and sees a big spinning X over its screen. The move gets past the protection from Dragon, and past some Buddha transformations.
How do you get Cursed Dual Katana?
Cursed Dual Katana is a boss drop that you can only reach through a puzzle. Follow the steps in order; the Cursed Skeleton Boss is the last stop.
- Reach level 2200 or higher. The puzzle only starts at that level. If you are short on level or mastery, the scrolls show the message "The inscription is too hard to read..."
- Own Yama and Tushita and raise both to 350 mastery. See Yama and Tushita for how to get each one.
- Talk to the Crypt Master next to the large stone building on the hill behind the Mansion in the Third Sea. Say yes when he asks if you want to enter, and the door opens around the corner of the building.
- Clear the trials on the two scrolls. Inside are a Yama scroll and a Tushita scroll. Hold the sword that matches the scroll. You can only run one trial at a time, and each finished trial gives 1 Alucard Fragment. The trials are listed below.
- Use the pedestal. Once both scrolls have burned up, interact with the pedestal. A wall opens and the level 2025 Cursed Skeleton Boss appears (160,000 HP). Only Yama or Tushita can damage it. When it is beaten, Cursed Dual Katana drops after a short delay at a 100% rate.
Full guide: Cursed Dual Katana puzzle. You do not have to win the boss fight: dying in it, or resetting through the Roblox menu, also gives you the sword.

Where the Crypt Master stands.
The scroll trials
Yama scroll (hold Yama)
- Pain and Suffering: take 8,000 to 10,000 damage from an enemy or another player. If it does not register, repeat it.
- Haze of Misery: your view fogs over and purple marks appear on groups of NPCs. Defeat every marked NPC. The marks show through walls, and some islands have none.
- Fear the Reaper: summon the Soul Reaper with a Hallow Essence, let it defeat you, and you are sent to the Hell Dimension.
- Hell Dimension: light three torches and defeat every NPC that spawns, plus the boss Hell's Messenger. A gate then returns you to the scroll room.
Tushita scroll (hold Tushita)
- Docks Legend: talk to three different Boat Dealers on three different islands and choose "Pardon me" on the last page of boats. Buying a boat does not count.
- Sense of Duty: defeat an enemy NPC from a Pirate Raid at the Castle on the Sea.
- Soulless: hit the Cake Queen once. A song then plays for two minutes, and you must defeat her before it ends to be sent to the Heaven Dimension.
- Heaven Dimension: light the torches and defeat the NPCs that spawn around each one, plus the boss Heaven's Guardian. The door then returns you to the scroll room.
Finished trials are saved across servers, but progress inside one trial is not. A private server is usually easier, since other players can interfere with many of the trials.
How do you upgrade Cursed Dual Katana, and what does it give?
One Blacksmith upgrade gives +7% damage (see the Upgrading guide). Demonic Wisp, Mini Tusk and Scrap Metal each have their own page.
Cursed Dual Katana upgrade cost







The Blacksmith screen: the three materials and the +7% damage result.
What are the best Cursed Dual Katana combos?
Easiest first. Most chains open with a stun or a gap-closer and then use Cursed Dual Katana Z or X.
Easy: Godhuman after the stun
- Keys: Stun move > Cursed Dual Katana Z > Cursed Dual Katana X > Godhuman Z > Godhuman X > Godhuman C
- Needs: Godhuman.
- Tip: The basic Cursed Dual Katana combo. You need a stun first. Godhuman Z, C, X in that order also works.
Easy: Sanguine Art finisher
- Keys: Stun move > Cursed Dual Katana Z (held) > Cursed Dual Katana X > Dash backwards > Sanguine Art Z > Sanguine Art X > Sanguine Art C
- Needs: Sanguine Art.
- Tip: Hold Z, land X, then dash backwards before the Sanguine Art moves. It mostly kills in one go and is hard to bait with an Instinct dodge.
Easy: Portal and Sanguine Art
- Keys: Portal X > Portal Z > Cursed Dual Katana Z (held) > Sanguine Art Z > Sanguine Art C > Cursed Dual Katana X > Sanguine Art X (look back)
- Needs: Portal and Sanguine Art.
- Tip: Portal brings you to the target, the held Z keeps them in place for Sanguine Art, and you look back before the last move.
Easy to medium: Sharkman Karate
- Keys: Sharkman Karate C > Cursed Dual Katana X > Cursed Dual Katana Z (release upwards) > Sharkman Karate X (jump up once or twice) > Sharkman Karate Z
- Needs: Sharkman Karate; sword-main stats (most of your points in Sword).
- Tip: Cyborg V3 adds extra damage.
Cursed Dual Katana strengths and weaknesses
Strengths
General
- High combo potential: it chains well with fruits and fighting styles, as the combos above show.
- Both moves can hit more than one enemy, and both can damage enemies in Sea Events.
- The M1 chain is fast and has no forward dash, which suits grinding.
Revolving Ravager (Z)
- A long stun when held, with a big vertical hitbox, so it starts combos well.
- It lets short-range moves reach a target that would otherwise be out of range.
Slayer of Goliath (X)
- Strong mobility, and very long range when held.
- Tapped, it has very little startup and endlag and breaks Instinct on a direct hit, so with good aim it punishes a missed move.
Weaknesses
General
- Cannot damage players using the Blade fruit.
- Hard to obtain: a long puzzle, and two other swords to master first.
- Heavy mastery needs, especially for X.
- It is so popular that players know how to counter it.
Revolving Ravager (Z)
- Weak for grinding: the released tornado does not drag several enemies, though the explosion can hit more than one.
Slayer of Goliath (X)
- Small hitbox, and hard to land on a moving target.
- The second explosion only happens against one enemy.
- Players wait for the full hold and then surprise you with an instant move (Ice V, for example), so a long X can be punished.
Verdict
Pick Cursed Dual Katana if you want high damage and combo potential and are ready for the grind to get it. If you need an easier sword to own, or you fight Blade users a lot, look elsewhere.
Cursed Dual Katana tips and tricks
- Finish the puzzle in a private server: many trials get harder when other players interfere, and half-done progress in a single trial is lost if you leave.
- Do the Soulless trial with help: unless your build hits very hard, ask another player to bring the Cake Queen to low health so you land the final hit inside the two minutes.
- Vary your X: players wait for a full hold. Tap it to punish a missed move, and keep the long hold for when the target cannot answer with an instant move.
- Expect Flash Step: a well-timed Flash Step gets out of both moves, so a single hit may not land.
Cursed Dual Katana showcase video
Cursed Dual Katana showcase video
Video by Shaz 007 on YouTube.
What changed in the Cursed Dual Katana updates?
Older guides may show the old model and the earlier look of the X screen effect.
- The model was reworked. The old model had an aura effect that only existed before this update.
- The spinning X shown on the target's screen during Slayer of Goliath got a small visual change.
- Added to the game.










