How to Get Kusanagi Sword Rogue Piece (March 2026) Complete Guide

Marcus Reed
January 27, 2026
RobloxGaming

Are you ready to wield one of the most powerful mythical swords in Rogue Piece? The Kusanagi sword, directly tied to Sasuke Uchiha from Naruto, represents the pinnacle of sword-based combat in this Roblox game. As someone who’s spent countless hours grinding for this legendary weapon, I’m here to guide you through every step of this challenging but rewarding journey.

In this comprehensive guide, you’ll learn exactly how to obtain Kusanagi, from understanding the requirements to mastering the Sasuke boss fight. Whether you’re a seasoned player or just starting your Rogue Piece adventure, this guide will save you time and prevent common mistakes that many players make during their grind.

Quick Overview: Kusanagi Requirements at a Glance

Requirement	Amount	Source	Drop Chance
Gems	30,000	Quests/Bosses/Chests	–
Kusanagi Katana	1	Sasuke Boss	0.75%
Rinnegan Eye	1	Sasuke Boss	1.5%
Sharingan Eye	1	Sasuke Boss	1.5%
The Last Uchiha Title	1	Sasuke Boss	3%

Table: Complete requirements for purchasing Kusanagi from the Kusanagi Seller NPC in Konoha Village.

Understanding Kusanagi: More Than Just a Sword

Before diving into the grind, it’s essential to understand what makes Kusanagi special. This isn’t your typical legendary weapon that drops directly from a boss. Instead, Kusanagi represents a complete progression system tied to the Sasuke Uchiha character build. The sword features lightning-based skills and devastating combos that make it one of the strongest mythical weapons for sword-based combat.

What sets Kusanagi apart is its unique acquisition method. Unlike other weapons that might drop as lucky rewards, Kusanagi requires deliberate planning, extensive grinding, and strategic resource management. The good news? Once purchased, Kusanagi is permanently unlocked and doesn’t consume your title or materials, allowing you to use them for other aspects of your build.

Step-by-Step Guide to Obtaining Kusanagi

Step 1: Reach the Required Level (3500+)

Before you can even think about hunting for Kusanagi, you need to reach level 3500+. This is because the Sasuke boss and Konoha Village are designed for high-level players. Here’s how I recommend leveling efficiently:

Focus on main quests until level 1500
Grind Jujutsu Highschool (1500-3500) for optimal EXP
Use EXP boosts from ranking up (check out our Rogue Piece Update Guide for ranking tips)
Join a active server for boss hunting parties

Step 2: Locate Konoha Village

Once you’re level 3500+, head to Konoha Village, which serves as the hub for all Sasuke-related content. Here you’ll find:

Kusanagi Seller NPC (where you’ll eventually purchase the sword)
Boss Summoner NPC (to spawn Sasuke)
Konoha Head Ninjas (required for boss summoning)
Various quest NPCs for levels 3500-4500

Step 3: Summon the Sasuke Boss

This is where the real challenge begins. Sasuke doesn’t spawn automatically like other bosses. Here’s the exact process:

Defeat 25 Konoha Head Ninjas in Konoha Village
Speak to the Boss Summoner NPC after meeting the kill requirement
Sasuke spawns at Final Valley (a separate area)

Pro Tip: The Konoha Head Ninjas are level 3500 mobs, so come prepared with appropriate gear and healing items. I recommend teaming up with other players to speed up this process.

Step 4: Master the Sasuke Boss Fight

Sasuke, The Last Uchiha, is no pushover. Here are his crucial stats:

Stat	Value
Health	20,000,000 HP
EXP Reward	100M EXP
Currency Reward	1,000 Bucks
Recommended Level	5500+

Boss Strategy Tips:

Bring healing items – 20M HP means this is a long fight
Use lightning-resistant gear if available
Focus on dodging his special attacks
Team up with other players for faster kills
Save your strongest abilities for phase transitions

Step 5: Farm the Required Materials

Now comes the grinding part. You’ll need to defeat Sasuke multiple times to collect all required materials due to the low drop rates:

Drop Rates Breakdown:

Kusanagi Katana: 0.75% (rarest material)
Rinnegan Eye: 1.5%
Sharingan Eye: 1.5%
The Last Uchiha Title: 3% (easiest to obtain)
Sasuke Outfit: 10% (cosmetic, not required)

Expected Time Investment: Based on drop rates and assuming average luck, expect to spend 8-10 hours grinding for all materials. This can vary significantly based on your RNG and drop boosts.

Step 6: Accumulate 30,000 Gems

While farming the boss, you’ll also need to collect 30,000 gems. Here are the most efficient methods:

Boss farming (Sasuke and other high-level bosses)
Completing daily quests for consistent gem income
Opening chests in high-level areas
Participating in events when available
Using gem boosts from ranking up (see our Rogue Piece Title Masterlist for rank benefits)

Step 7: Purchase Kusanagi

Once you have all materials and 30,000 gems:

Head to Konoha Village
Find the Kusanagi Seller NPC
Ensure you have all requirements in your inventory
Purchase Kusanagi – the materials and title remain in your inventory after purchase!

Advanced Strategies and Pro Tips

Maximizing Drop Rates

While you can’t change the base drop rates, you can optimize your farming:

Play during 2x drop events if the developers host them
Use any available drop boost items
Farm in full servers for faster respawns
Join a dedicated farming group to share materials

Efficient Boss Farming Route

Here’s my recommended farming loop:

Start in Konoha Village – kill 25 Head Ninjas
Summon Sasuke – defeat and collect drops
Reset and repeat – each cycle takes 15-20 minutes with a good team
Take breaks during server resets or maintenance

Building Around Kusanagi

Once you have Kusanagi, consider these build optimizations:

Pair with lightning-based abilities for synergy
Invest in sword mastery skills
Use speed builds to maximize combo potential
Consider complementary titles from our Rogue Piece Titles Masterlist

Common Mistakes to Avoid

After helping dozens of players obtain Kusanagi, I’ve seen these common mistakes:

Not checking inventory space – make sure you have room for all materials
Farming alone – this significantly increases your time investment
Ignoring gem accumulation – don’t focus only on material drops
Wasting resources on wrong builds – plan your build before obtaining Kusanagi
Not using proper gear for the boss fight

Frequently Asked Questions

Is Kusanagi worth the grind?

Absolutely! If you prefer sword-based combat, Kusanagi is one of the strongest mythical weapons with lightning-based skills and powerful combos. It outperforms most legendary swords in both DPS and utility.

Do I lose the title or materials after buying Kusanagi?

No! Unlike some other builds in Rogue Piece, Kusanagi does not consume the title or eye materials after purchase. You can continue using “The Last Uchiha” title and the eye materials for other purposes.

Can I get Kusanagi materials from other sources?

No, all required materials (Kusanagi Katana, Rinnegan Eye, Sharingan Eye, and The Last Uchiha Title) are exclusive drops from the Sasuke boss only.

What level should I be to farm Sasuke efficiently?

While the minimum is 3500+, I recommend being at least level 5500 for efficient solo farming. For group farming, level 4500+ should be sufficient with proper gear.

How long does it really take to get Kusanagi?

Based on my experience and community feedback, expect 8-10 hours of focused grinding with average luck. With excellent RNG and drop boosts, you might get it in 4-6 hours. Poor luck could extend this to 15+ hours.

Can I trade for Kusanagi materials?

Currently, materials for Kusanagi are not tradeable and must be obtained personally through boss farming.

Final Thoughts

Obtaining Kusanagi in Rogue Piece is undoubtedly one of the most challenging grinds in the game, but the reward is absolutely worth it. This mythical sword represents not just power, but dedication and mastery of the game’s content.

Remember that the journey to Kusanagi is as important as the destination. You’ll gain valuable experience, learn boss patterns, and potentially make friends along the way. Don’t get discouraged by the low drop rates – every player who wields Kusanagi went through the same grind.