The Cursed Dual Katana, often shortened to CDK, are two blades associated with Kozuki Oden in Blox Fruits. Obtaining them requires extensive preparation: you must level up Tushita and Yama, complete several trials, collect fragments, and rely on some luck to find the essence needed for one of the decisive stages.
The process is therefore not simply about defeating a single boss. It alternates between exploration objectives, fights against enemies, PvP encounters, and challenges in dark areas. Once the CDK have been obtained, however, their damage and skills confirm why they are considered particularly difficult weapons to acquire.
Preparing Tushita and Yama before the trials
The first requirement is to level up both required swords: Tushita and Yama. Each one must reach 350 mastery.
This detail matters: stopping at level 300 is not enough. Raising both weapons to the required threshold is therefore the absolute priority before heading to the scrolls. The Buddha Fruit can make this phase faster thanks to its effectiveness against groups of enemies.
Chocolate Island is a particularly convenient area for gaining mastery. At this stage, the goal is not yet to test the two swords at their maximum power, but simply to meet the requirement that unlocks the rest of the journey.
For players who enjoy progression built around a fruit and unexpected objectives, the experience also recalls this Blox Fruits challenge that starts at level 1 with the Fruit Notifier. Here, the difference is that every trip must meet the specific requirements of the CDK trials.
The Tushita trial: fragments to obtain
Once Tushita reaches 350 mastery, you must travel to Floating Turtle and interact with the corresponding scroll. The trial begins with a series of conversations with several characters located in the ports. After speaking to three of them, the first fragment is obtained.
You must then return to the scroll to receive the next step. One objective requires waiting for a pirate raid at the castle and eliminating the enemies to obtain an additional fragment. These raids may require some waiting, as they are said to occur every 1 hour and 15 minutes.
The third fragment is tied to Big Mom. One mistake can waste a great deal of time: you must have activated or obtained the required step from the scroll before defeating the boss. Beating Big Mom too early does not validate the objective. If that happens, you need to wait for her to return or make her respawn, then fight her again after properly accepting the quest.
After Big Mom is defeated, a passage leads to a trial area. There, you must light several torches, fight the enemies you encounter, pass through the doors, and return to validate your progress. This part concludes the Tushita path.
The Yama trial: PvP damage and marked enemies
The Yama route is presented as the more laborious one. It begins by activating the trial linked to the scroll, then completing a stage called Pain and Suffering.
The principle is simple on paper: another player must deal enough damage. In practice, you need to find someone willing to help or start a duel. Minor damage is not enough; progressing requires a stronger hit. It is therefore best to check the quest status before starting and make sure PvP is enabled.
After this phase, another mission requires defeating enemies marked by a purple circle or dot. They are spread across several islands. The Portal Fruit makes travel considerably easier, while Observation Aura helps spot targets through scenery and walls.
The areas explored include Cake Land, Chocolate Island, Great Tree, Haunted Castle, Hydra Arena, Boa Hancock’s island, Ice Cream Land, Peanut Kingdom, and the port. It is not necessarily necessary to defeat every enemy on each island: the key is to identify the ones with the purple mark and avoid wasting time on the others.
This hunt can feel confusing because fog reduces visibility, and some enemies stop displaying their mark after the objective progresses. Observation Aura remains the most reliable way to check that no useful target has been missed.
Legendary essence, the luck-based stage
After collecting the previous fragments, the next stage depends on legendary essence. It is obtained from a character at the castle in exchange for bones. Purchases are limited to ten attempts every two hours.
This is the most random part of the process. There are two different essences, and obtaining an essence does not automatically mean it is the one you are looking for. You must therefore check its name before celebrating too early.
When the right essence appears, it lets you summon a boss. The goal is not to defeat it; instead, you must let yourself be defeated in order to be transported to a new area. Once again, torches must be lit and enemies must be defeated without dying. The challenge remains tense, because failing forces you to repeat the sequence.
This dependence on randomness is a reminder that Blox Fruits progression can change very quickly depending on the items obtained. Players who start over from scratch already know that logic, as shown by this return to Blox Fruits with the Fruit Notifier, where each discovery can alter the rest of the adventure.
The final fight and the Cursed Dual Katana skills
After validating all six fragments, you must interact with the final mechanism to open the door and face the fight that grants access to the swords. Once this last stage is complete, the Cursed Dual Katana are finally added to your equipment.
The blades start at mastery level 1, so obtaining the CDK does not end the progression. You still need to use them against enemies to raise their mastery and unlock their techniques.
The first skill tested is Devastating Tornado. It creates a spectacular area attack, with damage observed at 15,000 during a test against enemies. At 375 mastery, the second skill, Slayer of Goliath, becomes available. Its animation directly evokes one of Oden’s attacks against Kaido.
The Cursed Dual Katana are therefore not merely two rare blades to display in your inventory. They reward a complete progression path involving weapon mastery, exploration, boss fights, PvP cooperation, and persistence in the face of randomness.
FAQ: Cursed Dual Katana in Blox Fruits
What mastery level is required for Tushita and Yama?
Tushita and Yama must both reach 350 mastery before you can begin the trials that lead to the Cursed Dual Katana.
Why is the Yama trial difficult?
It notably requires taking damage from another player, then finding and defeating enemies marked with a purple dot across different islands.
Why can legendary essence take a long time to obtain?
Obtaining it depends on luck. Purchases are limited to ten attempts every two hours, and two different essences can be received.
Which CDK skills are mentioned?
The skills mentioned are Devastating Tornado and Slayer of Goliath, with the latter unlocked at 375 mastery.
