How to Get Rengoku in Blox Fruits [Fast Tutorial]

If you are trying to get Rengoku in Blox Fruits, congratulations: you have officially reached the part of the game where “just one more boss kill” becomes a full personality trait. Rengoku is one of the most wanted Legendary swords in the Second Sea, not only because it looks fiery and dramatic, but because it hits hard, works well in combos, and makes your character feel like they walked straight out of an anime power-up scene.

The good news? Getting Rengoku is not complicated. The bad news? The Hidden Key drop rate has the emotional warmth of an ice cube. You will need to farm enemies at the Ice Castle in the Second Sea, get the Hidden Key, find the secret chest, and unlock the sword. That is the entire mission in one sentence. But if you want to do it fast, you need a smart route, not a “run around randomly and hope the Roblox gods feel generous” strategy.

This guide breaks down exactly how to get Rengoku in Blox Fruits, where to farm the Hidden Key, which enemies to target, how to reach the chest, and how to make the grind less painful. Let’s light up the Ice Castle.

What Is Rengoku in Blox Fruits?

Rengoku is a Legendary sword in Blox Fruits obtainable in the Second Sea. It is known for its flame-based attacks, strong damage, and useful combo potential. Many players want it because it is powerful for its stage of the game and does not require a complex questline like some later-game weapons.

In simple terms, Rengoku is a great sword for players who want a strong Second Sea weapon without chasing a dozen different NPCs across the map like they are collecting unpaid invoices. You mainly need access to the Second Sea, the ability to farm Ice Castle enemies, and enough patience to survive the Hidden Key grind.

Why Players Want Rengoku

Rengoku is popular because it offers a mix of speed, damage, and flashy moves. Its attacks are easy to understand, and its flame effects make combat feel satisfying. For many players, it becomes a reliable sword for grinding, PvP practice, and boss fights.

It is not the absolute strongest sword in the entire game, especially once you move deep into the Third Sea, but for the Second Sea it is a serious upgrade. Think of it as the sword equivalent of showing up to a snowball fight with a flamethrowerdramatic, unnecessary-looking, but very effective.

Quick Answer: How to Get Rengoku in Blox Fruits Fast

To get Rengoku fast in Blox Fruits, go to the Ice Castle in the Second Sea, defeat the Awakened Ice Admiral or Ice Castle enemies such as Arctic Warriors and Snow Lurkers, farm until you get the Hidden Key, then use that key to open the secret chest hidden behind a fake wall under the staircase inside the castle.

The fastest method is usually farming the Awakened Ice Admiral because he has a better Hidden Key drop chance than normal Ice Castle mobs. However, while waiting for the boss to respawn, you should also defeat Arctic Warriors and Snow Lurkers to keep generating chances for the key.

Requirements Before You Start

Before hunting Rengoku, make sure you are in the right stage of the game. Rengoku is found in the Second Sea, so you need access to that area first. Most players reach the Second Sea after progressing past the First Sea requirements and unlocking the next major part of the game.

You Need Access to the Second Sea

Rengoku is located at the Ice Castle, which is a Second Sea island. If you are still in the First Sea, you cannot simply swim there, wave politely at the sharks, and grab the sword. You must unlock the Second Sea through normal progression first.

You Should Be Strong Enough to Farm Ice Castle

The enemies involved in the Rengoku grind are not beginner-level punching bags. Arctic Warriors and Snow Lurkers are high-level Ice Castle enemies, while the Awakened Ice Admiral is a boss. If your damage is too low, farming will feel slow and frustrating.

You do not need to be perfect, but you should bring a solid fruit, fighting style, or sword setup. Long-range attacks are especially useful because the Awakened Ice Admiral can punish careless close-range players. If your plan is “I will face-tank everything and believe in friendship,” the boss may respectfully disagree.

Step-by-Step Tutorial to Get Rengoku

Step 1: Travel to Ice Castle in the Second Sea

First, head to the Ice Castle in the Second Sea. The island is easy to recognize because, as the name gently suggests, it has a huge icy castle. Once you arrive, go inside the main castle area. This is where the important enemies and the hidden chest are located.

The Ice Castle is also where you will find the Awakened Ice Admiral, the boss most players farm for the Hidden Key. Before starting, set your spawn nearby if possible, check your inventory, and prepare your best grinding build.

Step 2: Farm the Awakened Ice Admiral

The Awakened Ice Admiral is your best target for getting the Hidden Key quickly. He has a better chance of dropping it than regular Ice Castle enemies, making him the most efficient source. The Hidden Key is still rare, so do not panic if you do not get it after a few kills.

A smart strategy is to keep your distance and use long-range abilities. Many players prefer ranged fruits or attacks because they reduce the chance of getting caught by the boss’s ice moves. Keep moving, avoid standing still, and do not let greed convince you to run directly into danger for one extra hit. Greed has ended more boss fights than lag.

Step 3: Defeat Arctic Warriors and Snow Lurkers While Waiting

While waiting for the Awakened Ice Admiral to respawn, farm nearby Arctic Warriors and Snow Lurkers. These enemies can also drop the Hidden Key, though their drop chance is lower. Still, every defeat gives you another chance.

This is the part where efficiency matters. Instead of standing around like a decorative snowman, keep farming mobs. Use area attacks if you have them, group enemies carefully, and maintain a rhythm: boss, mobs, boss, mobs. The more enemies you defeat per hour, the better your odds become.

Step 4: Get the Hidden Key

Eventually, after enough farming, the Hidden Key should drop. Make sure you notice it. Players sometimes get distracted, especially after repeating the same farm loop for a while. Check your inventory if you are unsure.

The Hidden Key is the item needed to unlock the chest that contains Rengoku. Do not confuse it with the Library Key. The Library Key is useful for another purpose, but it will not open the Rengoku chest. Wrong key, wrong door, wrong emotional outcome.

Step 5: Find the Secret Chest Under the Staircase

Once you have the Hidden Key, go inside the Ice Castle and look for the staircase below the area where the Awakened Ice Admiral appears. Under the stairs, there is a hidden passage behind a fake wall. Walk through the wall to enter the secret room.

Inside, you will find the chest that contains Rengoku. Equip or use the Hidden Key on the chest, open it, and claim the sword. Once you unlock Rengoku, you will also receive the Samurai title when equipping it.

Fastest Farming Strategy for Rengoku

The fastest way to get Rengoku is not about luck alone. It is about creating as many Hidden Key chances as possible in the shortest amount of time. Your goal should be to eliminate downtime.

Use a Boss-and-Mob Rotation

Start by fighting the Awakened Ice Admiral. After defeating him, immediately farm Arctic Warriors and Snow Lurkers nearby. When the boss returns, fight him again. Repeat this cycle until the Hidden Key drops.

This method is better than waiting around for the boss because normal enemies still provide key chances. Even if their drop rate is lower, they are worth farming during boss downtime.

Use High-Damage Area Attacks

If your fruit or fighting style has area damage, use it. Abilities that hit multiple enemies at once help clear mobs faster. Faster clears mean more attempts, and more attempts mean better odds.

Good farming builds usually focus on speed, range, and survivability. You want to defeat enemies quickly without constantly being forced to heal or reset. If every fight feels like a final exam, upgrade your build before continuing.

Consider 2x Boss Drops If You Already Own It

Players who have the 2x Boss Drops game pass can improve their odds when farming boss drops. This can help with the Hidden Key from the Awakened Ice Admiral. However, you do not need to buy anything to get Rengoku. It is fully obtainable through normal farming.

If you do not have the game pass, do not stress. Your best weapon is still consistency. The Hidden Key may drop quickly, or it may take longer. That is RNG, also known as “Roblox Naturally Giggles.”

Rengoku Moveset Explained

After getting Rengoku, you will need to build mastery to unlock its moves. The sword has two main abilities: Demon Slayer and Burning Slash. Both are flame-themed and useful for combat.

Demon Slayer

Demon Slayer is Rengoku’s first special move. It lets your character dash forward and attack the target with a fiery sequence. This move is useful for closing distance, starting combos, and dealing quick damage.

The key with Demon Slayer is accuracy. If you miss, you may dash awkwardly past your target like you were late for a bus. Practice lining up the move before using it in serious fights.

Burning Slash

Burning Slash is Rengoku’s second move and gives the sword more area pressure. It sends out a fiery slash that can damage enemies and help control space. This move is especially satisfying when enemies are grouped together.

Burning Slash is excellent for finishing combos or punishing players who move predictably. In PvE, it helps clear enemies more smoothly once you have enough mastery.

Is Rengoku Worth Getting?

Yes, Rengoku is worth getting, especially for Second Sea players. It is powerful, stylish, and not locked behind an overly complicated questline. The main challenge is simply obtaining the Hidden Key.

Rengoku is particularly good if you enjoy sword combat and want something stronger than basic weapons. It also gives you a smoother path into more serious sword builds later in the game.

Best Uses for Rengoku

Rengoku works well for grinding, boss fights, and early PvP practice. Its moves are direct and easy to understand, making it beginner-friendly compared with weapons that require more technical timing.

It also looks fantastic. Let’s be honest: in Blox Fruits, style matters. If you are going to defeat enemies for hours, you might as well look like a flaming legend while doing it.

Common Mistakes When Getting Rengoku

Mistake 1: Farming Only Normal Mobs

Arctic Warriors and Snow Lurkers can drop the Hidden Key, but their chance is lower than the boss. If you ignore the Awakened Ice Admiral completely, your grind may take much longer.

Mistake 2: Confusing the Hidden Key With the Library Key

The Library Key is not the Rengoku key. You need the Hidden Key. Many players get excited when any key drops, only to realize they have unlocked disappointment instead of a sword.

Mistake 3: Not Checking the Secret Wall Properly

The Rengoku chest is behind a fake wall under the staircase. If you are in the right area but do not see it, walk through the wall. It is not obvious the first time, which is probably why so many players end up circling the castle like confused penguins.

Extra Tips to Get Rengoku Faster

Bring a build that can farm consistently. Use ranged attacks against the boss when possible. Keep defeating normal Ice Castle enemies while waiting. Stay focused on the rotation. If you are playing with friends, coordinate damage so kills happen faster, but remember that drops can still depend on game mechanics and participation.

Also, do not burn yourself out. Rengoku is a great sword, but if the Hidden Key refuses to drop, take breaks. RNG feels worse when you are tired. Come back later, restart the farm, and keep the loop clean.

Personal Experience: What the Rengoku Grind Really Feels Like

Farming Rengoku in Blox Fruits feels simple on paper and weirdly personal in practice. The tutorial is easy: go to Ice Castle, defeat enemies, get Hidden Key, open chest. Done. But the moment you start farming, the Hidden Key becomes less of an item and more of a tiny digital ghost that enjoys watching you suffer politely.

The best experience-based advice is to avoid farming with a lazy rhythm. If you only defeat the Awakened Ice Admiral and then stand around waiting, the grind feels twice as long. A much better approach is to turn the whole Ice Castle into your route. Kill the boss, sweep nearby mobs, return to the boss area, and repeat. This keeps your hands busy and makes the process feel productive instead of painfully slow.

Another useful lesson is that range makes the grind more comfortable. The Awakened Ice Admiral can be annoying if you fight too close without a plan. Staying mobile and using long-range attacks gives you more control. You do not need to play perfectly, but you should avoid standing still directly in front of him. That is less “brave warrior” and more “free sample.”

It also helps to set expectations. Some players get the Hidden Key quickly. Others farm for ages and start questioning whether their account has personally offended the game. Both experiences are normal. Rare drops in Blox Fruits can feel unpredictable, so your best move is to measure progress by attempts, not emotions.

When the Hidden Key finally drops, the reward feels great because the path to the chest is short and satisfying. Walking through the fake wall under the stairs and opening the hidden chest gives the whole thing a secret-treasure vibe. It is one of those moments where Blox Fruits does a good job making a weapon feel earned without requiring a huge multi-step puzzle.

After unlocking Rengoku, the next smart move is to build mastery immediately. Do not let the sword sit in your inventory like a fancy museum object. Use it on enemies, practice Demon Slayer, unlock Burning Slash, and learn how its movement feels. Rengoku becomes much more fun once both moves are available.

Overall, the Rengoku grind is worth it if you enjoy sword combat or want a strong Second Sea weapon. It is not the most complicated unlock in Blox Fruits, but it teaches an important rule of the game: efficiency beats complaining. Though, to be fair, complaining while farming is also part of the authentic experience.

Conclusion

Getting Rengoku in Blox Fruits is straightforward once you know the route. Travel to Ice Castle in the Second Sea, farm the Awakened Ice Admiral for the best Hidden Key chance, defeat Arctic Warriors and Snow Lurkers during downtime, then use the Hidden Key to open the secret chest behind the fake wall under the staircase.

Rengoku is worth the effort because it is strong, stylish, and useful for many Second Sea players. The grind may test your patience, but the reward is a Legendary sword that feels great to use. Stay consistent, farm smart, and remember: the Hidden Key cannot hide forever. Probably.