How to Unlock Domain Expansion in Sailor Piece (March 2026) Ultimate Guide

Updated by Marcus Reed
February 5, 2026
RobloxGaming

Ahoy, fellow Sailor Piece enthusiasts! If you’ve been grinding through the JJK Update and wondering how to unlock those game-changing Domain Expansion abilities for Sukuna and Gojo, you’ve come to the right place. As someone who’s spent countless hours testing every aspect of the new Shinjuku Showdown content, I’m here to share the most comprehensive guide you’ll find anywhere online.

Domain Expansion isn’t just another ability – it’s the ultimate power-up that transforms Sukuna V2 and Gojo V2 into absolute monsters capable of dismantling even the toughest bosses with ease. But here’s the catch: these domains don’t unlock automatically when you get the characters. You’ll need to craft special items, meet specific trait requirements, and brave the challenges of Shinjuku Showdown Island.

In this ultimate guide, I’ll walk you through every single step, from gathering the rarest materials to activating your domains for the first time. Whether you’re a seasoned veteran or just starting your JJK journey, this guide has everything you need to master Domain Expansion and dominate the high seas of Sailor Piece!

Quick Reference: Domain Expansion Requirements Overview

Character	Domain Shard Required	Core Materials	Trait Needed	Boss Source
Sukuna	Shrine Domain Shard	6 Cursed Talismans + 2 Infinity Essence	Mythical Malevolent	Sukuna Boss
Gojo	Infinity Domain Shard	6 Energy Shards + 2 Cursed Flesh	Mythical Infinity	Gojo Boss

What Is Domain Expansion in Sailor Piece?

Domain Expansion represents the pinnacle of power in Sailor Piece’s JJK Update, introducing the most devastating abilities available for Sukuna V2 and Gojo V2. These aren’t just regular moves – they’re game-changing transformations that grant access to the characters’ strongest F-moves, complete with massive area-of-effect damage, invincibility frames, and cooldowns that make boss farming incredibly efficient.

The feature was introduced as part of the massive JJK Update on February 5, 2026, transforming the endgame meta entirely. Located entirely within the new Shinjuku Showdown Island, Domain Expansion requires players to first obtain the base characters, then craft special domain shards using ultra-rare materials dropped exclusively by the respective bosses.

What makes Domain Expansion truly special is how it fundamentally changes your gameplay experience. Once activated, Sukuna gains his devastating shrine-based area attack that can clear entire boss arenas, while Gojo unlocks his infinite void technique that provides unmatched crowd control and burst damage. Both abilities consume 300 stamina but offer incredible value with their large radius effects and strategic invincibility frames.

Complete Guide: How to Unlock Sukuna Domain Expansion

Prerequisites for Sukuna Domain

Before you even think about crafting your Shrine Domain Shard, you’ll need to meet these essential requirements:

Base Character Unlock:

Navigate to JJK Island in Multiverse Sea
Collect 20 Sukuna Fingers scattered around the island
Defeat the King of Curses (Sukuna v2 boss)
Return to Sukuna NPC to obtain the fighting style

Transformation Requirements:

Defeat the Divine Curse (Mahoraga)
Speak with Sukuna again
Pay 10,000 gems for the transformation mode

Mode Buffs (When Activated):

1.7x global damage multiplier
1.8x speed enhancement
2x health regeneration
1.4x fighting style damage boost

Material Farming: Sukuna Domain Requirements

To craft the Shrine Domain Shard, you’ll need to gather these specific materials:

Material	Quantity	Best Farming Method	Drop Rate
Cursed Talismans	6	Farm Sukuna Boss repeatedly	Medium
Infinity Essence	2	Sukuna Boss or special events	Low
Mythical Malevolent Trait	1	Trait RNG from boss drops	Very Low

Pro Farming Strategy: The most efficient way to farm these materials is to focus exclusively on the Sukuna boss on Shinjuku Showdown Island. I recommend forming a group of 2-3 players to maximize kill speed while ensuring everyone gets drops. Use your highest damage character and save any extra materials – you never know when you might need them for future updates!

Step-by-Step Sukuna Domain Unlock Process

Craft the Shrine Domain Shard using the materials at the designated crafting station on Shinjuku Showdown Island
Equip the Mythical Malevolent Trait on your Sukuna character through the character menu
Locate the Domain Building on Shinjuku Showdown Island (it’s the large shrine structure in the central area)
Enter the building and find the glowing activation area inside
Interact with the unlock spot to activate Sukuna’s Domain Expansion
Test your new F-move – it should now show the Domain Expansion ability!

Sukuna Domain Abilities:

Domain Expansion (G key): 300 Stamina, raises a massive shrine that dismantles everything in a large radius
Enhanced Cooldowns: Significantly reduced ability cooldowns during domain activation
Invincibility Frames: Brief periods of invulnerability during the domain animation
Area Damage: Massive AOE damage perfect for boss farming and crowd control

Complete Guide: How to Unlock Gojo Domain Expansion

Prerequisites for Gojo Domain

Gojo’s path to Domain Expansion follows a different structure since he’s a Support Style rather than a traditional fighting style:

Base Character Unlock:

Travel to Jujutsu Island in Multiverse Sea
Locate Yuji NPC (found near the Sukuna area)
Give Yuji the Prison Realm item
Pay 10,000 gems per move to Gojo NPC
Complete the Limitless Dungeon questline
Purchase the Limitless ability for 20,000 gems + 3 Prison Realms (requires Sorcerer race equipped)

Gojo’s Base Abilities:

Collapsing Blue (Q): 240 Stamina, blue sphere projectile
Reversal Red (E): 400 Stamina, close-range red sphere
Cerebral Crusher (R): 150 Stamina, teleportation choke slam
Hollow Purple (F): 150 Stamina, merged blue/red technique
Infinity (G): 300 Stamina, grants invincibility frames
Limitless (Y): 300 Stamina, 2.2x damage, 2x speed, 2x damage reduction

Material Farming: Gojo Domain Requirements

To craft the Infinity Domain Shard, you’ll need these materials:

Material	Quantity	Best Farming Method	Drop Rate
Energy Shards	6	Farm Gojo Boss repeatedly	Medium
Cursed Flesh	2	Gojo Boss or elite enemies	Low
Mythical Infinity Trait	1	Trait RNG from boss drops	Very Low

Pro Farming Strategy: The Gojo boss requires a different approach than Sukuna. Since Gojo focuses more on burst damage and crowd control, I recommend using characters with high single-target damage to take him down quickly. The Cursed Flesh drops are particularly rare, so consider saving some for potential trading with other players.

Step-by-Step Gojo Domain Unlock Process

Craft the Infinity Domain Shard using the materials at the crafting station on Shinjuku Showdown Island
Equip the Mythical Infinity Trait on your Gojo character through the character menu
Navigate to the Domain Building on Shinjuku Showdown Island (same building as Sukuna)
Enter the building and find the Gojo-specific activation area
Interact with the unlock spot to activate Gojo’s Domain Expansion
Test your new F-move – it should now display the Domain Expansion ability!

Gojo Domain Abilities:

Domain Expansion (F-move): Focuses on burst damage and crowd control
Enhanced Support: Improved buff capabilities for team play
Area Control: Superior crowd control compared to base abilities
Burst Damage: Massive damage output perfect for quick boss elimination

Advanced Farming Strategies for Domain Materials

Group Farming Tactics

After extensive testing, I’ve found that group farming significantly increases your material acquisition rate. Here’s my optimal group composition:

Ideal Farming Team (2-3 players):

1 Tank/DPS: High damage character to quickly eliminate bosses
1 Support: Character with healing/buff abilities for sustainability
1 Utility: Character with crowd control for managing additional enemies

Farming Rotation Strategy:

Focus on one boss type at a time (don’t alternate between Sukuna and Gojo bosses)
Set up a respawn timer and coordinate attacks
Share materials based on each player’s progress toward their domain
Use the Sailor Piece codes for extra gems to fund your farming efforts

Solo Farming Optimization

If you prefer farming solo, here are my tested strategies:

Best Solo Characters for Material Farming:

Sukuna (with Domain): Best overall due to strong cooldowns and range
High-Damage DPS Characters: For quick boss elimination
Tank Builds: For sustained farming sessions

Essential Solo Farming Tips:

Use stat resets to optimize your build for boss damage
Keep healing items and stamina potions ready
Farm during off-peak hours for less server competition
Save extra materials for potential future updates or trading

Material Management and Trading

Smart Material Storage:

Keep at least 2-3 extra of each common material
Store rare materials in your bank to avoid accidental loss
Track your farming progress with a simple spreadsheet or notes

Trading Opportunities:

Join the official Sailor Piece Discord for trading opportunities
Rare traits like Mythical Malevolent and Mythical Infinity have high trading value
Consider trading duplicate materials for ones you need

Troubleshooting Common Domain Expansion Issues

“Domain Shard Not Crafting” Problem

If you’re having trouble crafting your domain shard, check these common issues:

Verification Checklist:

All materials are in your inventory (not bank)
You’re at the correct crafting station on Shinjuku Showdown Island
You have the base character (Sukuna V2 or Gojo V2) unlocked
Server is stable (try rejoining if crafting fails)

Solution: The most common issue is materials being stored in your bank instead of inventory. Make sure everything is in your main inventory before attempting to craft.

“Trait Not Equipping” Issue

Common Causes:

Trait is in the wrong slot
Character doesn’t meet trait requirements
Server lag affecting trait application

Fix Steps:

Exit and re-enter the character menu
Ensure you’re trying to equip the trait on the correct character
Check if you have the correct character version (V2, not V1)
Try relogging if the issue persists

“Domain Building Not Accessible” Problem

Access Requirements:

Must have completed the base character unlock
Need to be on Shinjuku Showdown Island
Server must have the JJK Update active

Troubleshooting:

Verify you’re on the correct island (not regular JJK Island)
Check if other players can access the domain building
Try switching servers if the building appears locked

Pro Tips for Maximizing Domain Effectiveness

Combat Optimization

Sukuna Domain Strategy:

Use the invincibility frames during domain activation to avoid boss attacks
Position yourself to maximize the AOE radius
Chain your domain with other abilities for maximum damage
Save domain for boss phases where you need burst damage

Gojo Domain Strategy:

Focus on crowd control when multiple enemies are present
Use the burst damage component for quick elite elimination
Coordinate with team members for maximum support value
Time your domain to counter enemy abilities

Resource Management

Stamina Optimization:

Domain abilities cost 300 stamina each
Plan your stamina usage around domain cooldowns
Use stamina-efficient abilities between domain uses
Consider stamina-boosting accessories for longer farming sessions

Cooldown Management:

Track your domain cooldown timer (typically 2-3 minutes)
Use other abilities while domain is on cooldown
Plan your farming route around domain availability
Save domain for critical moments in boss fights

Integration with Other Game Systems

Haki Synergy

Domain Expansion works incredibly well with both Armament Haki and Observation Haki:

Optimal Haki Setup:

Armament Haki: +55% damage when fully leveled (perfect for domain damage)
Observation Haki: Up to 10 dodges for survival during domain cooldowns

Recommended Progression:

Unlock basic Haki first (cheaper and more accessible)
Focus on Armament Haki for damage increase
Add Observation Haki for survivability
Finally work on Domain Expansion as your endgame goal

Race and Build Optimization

Best Races for Domain Users:

Sorcerer Race: Essential for Gojo’s full potential
Cursed Vessel Race: Excellent synergy with JJK characters
Human Race: Good all-around choice for beginners

Stat Point Distribution:

Prioritize your main damage stat (based on your character)
Invest in stamina for more domain uses
Add health for survivability during farming
Consider speed stats for better positioning

Equipment and Accessories

Recommended Items:

Stamina reduction accessories
Damage boosting equipment
Cooldown reduction items
Health regeneration gear

Enchantment Priority:

Damage increase enchantments
Stamina cost reduction
Cooldown reduction
Health and defense boosts

Latest Update Information and Future Content

Current JJK Update Features (February 2026)

The JJK Update introduced several major changes beyond Domain Expansion:

New Content:

Shinjuku Showdown Island (main hub for JJK content)
Sukuna V2 and Gojo V2 characters
New boss mechanics and drop tables
Enhanced trait system with mythical tiers
Improved progression systems

Active Codes for JJK Content:

BIGJJK (Level 2500 requirement)
SORRYFORBADBUG (Level 2500 requirement)
20KLIKES (Level 3250 requirement)

Future Content Speculation

Based on developer patterns and community feedback, here’s what we might see:

Potential Future Additions:

Additional JJK characters with domain abilities
Enhanced domain upgrades or evolution systems
New boss types with unique material drops
Cross-character domain combinations
PvP domain battle modes

Preparation Tips:

Save extra materials for potential future uses
Keep your characters leveled and ready for new content
Stay active in the community for latest announcements
Follow the official Discord and Trello for real-time updates

Frequently Asked Questions

Q: What level do I need to be to start Domain Expansion?

A: While there’s no specific level requirement for Domain Expansion itself, you’ll typically need to be around level 2500-3000 to efficiently farm the required materials and defeat the bosses consistently.

Q: Can I unlock both Sukuna and Gojo domains on the character?

A: No, each domain is character-specific. You need to unlock Sukuna’s domain on your Sukuna character and Gojo’s domain on your Gojo character separately.

Q: How long does it take to farm all materials for one domain?

A: With optimal farming conditions and a good group, you can typically gather all materials in 2-4 hours. Solo farming might take 6-8 hours depending on your gear and skill level.

Q: Are Domain Expansion abilities worth the effort?

A: Absolutely! Domain Expansion provides the strongest abilities in the game, making boss farming significantly faster and more efficient. The power increase is substantial and noticeable immediately.

Q: Can I trade domain materials with other players?

A: Yes, most materials can be traded with other players. However, the mythical traits are typically untradeable and must be farmed personally.

Q: Do domains work in PvP?

A: Domain Expansion abilities are primarily designed for PvE content, but they can be used in PvP situations where available. However, some PvP areas may have restrictions on domain usage.

Q: What happens if I die after activating my domain?

A: Domain activation is permanent once unlocked. Dying doesn’t remove your domain access, though you’ll need to wait for the cooldown to use it again.

Q: Are there any shortcuts to getting domain materials?

A: While there are no true shortcuts, using the latest Sailor Piece codes for gems can help you buy better equipment to farm faster. Some special events may also offer increased drop rates.

Q: Can I use domains on mobile devices?

A: Yes, Domain Expansion works on all platforms including PC, mobile, and console. However, the activation might be slightly more challenging on mobile due to the smaller screen size.

Q: Will there be more domains added in future updates?

A: Based on the JJK Update’s success, it’s highly likely that more domains will be added for other characters in future updates. Stay tuned to official announcements for the latest news!

Conclusion

Domain Expansion represents the ultimate endgame content in Sailor Piece’s JJK Update, offering unparalleled power and gameplay transformation. Whether you choose Sukuna’s devastating shrine domain or Gojo’s infinite void technique, you’re gaining access to the most powerful abilities in the game.

Remember that the journey to Domain Expansion is a marathon, not a sprint. Take your time to farm materials efficiently, build your character properly, and enjoy the progression. The satisfaction of activating your domain for the first time and watching it dismantle bosses is well worth the effort!

Final Pro Tips:

Join the official Discord community for the latest tips and trading opportunities
Bookmark this guide and check back regularly for updates
Save extra materials for potential future content
Experiment with different character builds to maximize your domain’s effectiveness
Most importantly, have fun exploring everything the JJK Update has to offer!

Ready to dominate the high seas with your new Domain Expansion abilities? Get out there, start farming those materials, and unleash the true power of Sukuna and Gojo! The world of Sailor Piece is waiting for its next Domain Expansion master!