Rengoku is a Legendary sword in Blox Fruits dropped by the Awakened Ice Admiral in the Second Sea . It’s known for its high damage output, fast attack speed, and devastating combos.
While it’s been around for a while, Rengoku remains one of the most reliable Legendary swords for Second Sea players.
📊 Rengoku Stats
| Stat | Value |
|---|---|
| Type | Legendary Sword |
| Location | Ice Castle (Second Sea) |
| Drop Source | Awakened Ice Admiral (5% drop) |
| Alternative Drop | Arctic Warriors (< 1% drop) |
| Best For | Second Sea PvP, Grinding |
🔓 How to Get Rengoku
Step 1: Get the Hidden Key
The Hidden Key drops from:
| Enemy | Location | Drop Rate |
|---|---|---|
| Awakened Ice Admiral | Ice Castle | 5% |
| Arctic Warriors | Outside Ice Castle | < 1% |
| Snow Lurkers | Outside Ice Castle | < 1% |
Best Strategy: Farm the Awakened Ice Admiral. Server hop if he’s not spawned.
Step 2: Find the Secret Room
- Enter the Ice Castle on Hot and Cold Island
- Go down the staircase below the Ice Admiral spawn
- Look to the right of the staircase
- Walk through the fake wall (it’s an illusion!)
Step 3: Open the Chest
- Inside the secret room, find the locked chest
- Use your Hidden Key
- Rengoku is yours!
Dealing with RNG
- If you get a Library Key instead, that’s for Death Step
- Server hop and try again
- Average attempts: 5-6 tries for Hidden Key
Pro Tip: Farm the Ice Admiral during off-peak hours for faster spawns and less competition.
⚡ Rengoku Moveset and Stats
Rengoku has two powerful moves with solid mastery requirements.
| Move | Key | Mastery | Description |
|---|---|---|---|
| Demon Slayer | Z | 150 | Bolt forward in a straight line, unleashing a flurry of slashes. High damage. |
| Burning Slash | X | 375 | Horizontal slash that fires a beam, burns the ground, and applies tick damage. |
Key Characteristics
- High damage output - Competitive with Legendary swords
- Fast attack speed - Quick M1 combos
- Burn DoT - Burning Slash adds damage over time
- Good knockback - Controls fight spacing
- Stuns Blade users - Rare utility
🥊 Best PvP Combos
Basic Combo
Rengoku Z (Demon Slayer) → M1s → X (Burning Slash)
Simple and effective. The dash from Z closes distance, M1s deal damage, X finishes.
Extended Combo with Fighting Style
Fighting Style Stun → Rengoku Z → M1s → Rengoku X → Fighting Style Finish
Use Godhuman , Electric Claw , or Death Step for the stun.
Fruit Integration
Fruit Stun → Rengoku Z → X → Fruit Finish
Works well with Dough , Ice, or Control for the initial stun.
Grinding Combo
Rengoku X (AoE burn) → Z (gap close) → M1 finish
Clear mobs efficiently with the burn DoT.
⚔️ Rengoku vs Other Legendary Swords
| Sword | Damage | Speed | Acquisition | Best For |
|---|---|---|---|---|
| Rengoku | High | Fast | Boss drop (RNG) | Second Sea PvP |
| Bisento | Very High | Medium | Third Sea quest | Raw damage |
| Shisui | High | Very Fast | First Sea | Speed combos |
| Tushita | High | Fast | Puzzle (complex) | CDK path |
Rengoku’s Advantages
- Simplest obtainment among Second Sea Legendaries
- High damage + burn DoT for sustained pressure
- Fast enough for competitive combos
- Available early in Second Sea progression
When to Replace Rengoku
- Once you reach Third Sea and get Tushita / Yama
- If you want specialized swords for CDK path
- In end-game, Dark Blade V3 or CDK outperform
✅ Is Rengoku Still Good in 2026?
Yes, Rengoku is still viable. Here’s the breakdown:
Strengths in 2026
- Excellent for Second Sea - Top-tier for its level range
- Simple to obtain - No complex puzzles
- High damage still relevant - Not power-crept at its level
- Strong combos - Pairs well with meta fighting styles
Weaknesses
- Falls off in Third Sea - Better options available
- RNG dependent - 5% drop can be frustrating
- Not CDK path - Doesn’t contribute to end-game goal
Who Should Use Rengoku?
- Second Sea players (levels 700-1500)
- Players waiting for Third Sea swords
- Budget sword users who need power now
❓ Frequently Asked Questions
How long does it take to get Rengoku?
Average: 5-6 Ice Admiral kills with server hopping. Could be faster or slower due to RNG.
Is Rengoku better than Shisui?
For Second Sea, yes. Rengoku has higher damage. Shisui is a First Sea sword.
Can Rengoku beat Dark Blade?
In skilled hands, it can compete. Dark Blade has higher ceiling but Rengoku is more accessible.
Should I grind Rengoku or skip to Third Sea swords?
Get Rengoku! It’s useful for the levels you’ll spend in Second Sea . You need a sword anyway.
What if I keep getting Library Key?
That’s for Death Step . Keep farming until you get Hidden Key for Rengoku.