How to Get Rengoku in Blox Fruits – The Only Method to Get the Red Sword

Discover how to get Rengoku in Blox Fruits and how you can equip this Legendary Sword.

The Rengoku sword is one of the strongest weapons in Blox Fruits, outperforming even weapons such as the Pole V2 and Koko.

How to Get Rengoku in Blox Fruits

Whether you are a Blox Fruit, Gun, Melee, or Sword main, having such a powerful weapon in your arsenal is very useful in the game. 

However, finding a sword like Rengoku on your own can be nearly impossible and players struggle to obtain this sword.

In this guide, we’ll walk you through the exact steps you have to take to get this coveted blade.

How to Get Rengoku in Blox Fruits?

The Rengoku sword can be found in the Ice Castle of the Second Sea

To obtain it, the player must have a Hidden Key which can be dropped by the Awakened Ice Admiral, Arctic Warrior, or Snow Lurker.

The sword can be found inside a secret chest under the Ice Admiral’s right staircase.

But based on experience, this sword is not that simple to get.

Here are the steps you should follow to ensure you obtain the Rengoku as fast as possible.

Step 1: Go to Ice Castle on Second Sea

How to Get Rengoku in Blox Fruits - ice castle
 Credits: Slash Roblox

The Ice Castle is the second to the last island on the Second Sea, so you need to be considerably strong to reach it.

The quests on this island are for players level 1350 – 1425. It is located north of the Dark Arena and you can reach it by boat or by flying if you’re an elemental fruit user.

The island is very big but your target location is easy to spot, as it’s basically a giant castle in the middle of the area.

This is where the Awakened Ice Admiral spawns and where you can find the Rengoku.

Step 2: Obtain a Hidden Key

How to Get Rengoku in Blox Fruits - hidden key
Credits: NexBlox

A Hidden Key is required to open the chest that contains the Rengoku. This is the hardest and most grind-intensive part of getting the weapon because the Hidden Key has a pretty low drop chance. 

You can get it from any enemy NPC on Ice Island, including small fries like Arctic Warriors or Snow Lurkers, but they only have a 0.05% or 1 in 500 chance of dropping a Hidden Key.

On the other hand, the Awakened Ice Admiral has a 5% chance of dropping it.

That’s why we recommend killing the boss instead because 1 out of 20 is way better odds. 

He is a Level 1400 Boss NPC and respawns 20 minutes after he is killed. Server hopping is by far the best method to get a Hidden Key as fast as possible.

Go to another server, check if the boss is alive, kill him, and keep repeating this until you get a Hidden Key.

You can be lucky and get it in the first few kills or it might take over 20 tries. You might also get a Library Key in the process.

Step 3: Open the Secret Chest

How to Get Rengoku in Blox Fruits - secret chest

The Rengoku sword is contained in a secret chest inside the same building where you found the Awakened Ice Admiral.

Go to the right corner of the room while facing the Admirals’ spawn location.

You can walk right through this wall to find the secret chest. Simply touch the chest with the Hidden Key in your Inventory to get the Rengoku.

What Is Rengoku in Blox Fruits?

How to Get Rengoku in Blox Fruits - rengoku sword
Credits: Deraxity

Rengoku is a Legendary sword in Blox Fruits. This sword offers high damage output, great combo potential, and knockback effects.

The Rengoku Sword is pretty effective against races like Shark and Cyborg thanks to its burst damage. 

It comes with two moves: Demon Slayer and Burning Slash.

Both can break Instinct and deal high amounts of damage in a short duration, and their knockback effects can be annoying for grinding but insanely great for PVP.

This sword is said to have been made by demons from the depths of the earth distinguishable by its dark and fiery appearance.

It is inspired by Rengoku the Flame Hashira and his sword from Demon Slayer.

Rengoku Sword Blox Fruits: FAQs

What is the key to get Rengoku?

The key to get Rengoku in Blox Fruits is the Hidden Key item, which can be dropped by the Awakened Vice Admiral in the Second Sea, or any other enemy NPC in the Ice Castle Island.

Is Rengoku the best sword in Blox Fruits?

Rengoku has a rarity of Legendary, which means it can be a deadly weapon if wielded by the right user.

However, there are also Mythical swords such as the Dark Sword and True Triple Katana that are considered rarer and more powerful than Legendary swords. 

Does rengoku v2 exist?

No. Rengoku V2 does not exist in Blox Fruits. You can upgrade the Rengoku by talking to the Blacksmith but that’s about it.

A fan created a concept for Rengoku V2 in the Blox Fruits wiki, but it isn’t official.

How to get Rengoku in Blox Fruits without a key?

You can’t. The Rengoku Sword can only be obtained from one location in the entire game, and that is the secret chest on Ice Castle.

You need a Hidden Key to open it. We all want to avoid the boss hunting, server hopping, and tedious grind but it’s essential for obtaining the Rengoku.

Related Articles:


Now you know how to get Rengoku in Blox Fruits.

Gear up and prepare for a cold-blooded and icy battle. While obtaining this Legendary sword takes some grinding, effort, and patience, it will all be worth it when you’re slashing through your enemies with a sword of fire.

Did you find this article useful? Let us know in the comments section below!

GameGrinds is the best resource for serious gamers. So feel free to check out more of our Roblox Blox Fruits articles.

About Kimjun

Kimjun specializes in creating in-depth articles and carefully curating and testing game codes for the popular game Welcome to Bloxburg and Blox Fruits, providing readers with the latest insights and strategies for an improved gaming experience.

Leave a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.