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Rengoku sword — Blox Fruits
LegendarySword

Rengoku

Weapon · Blox Fruits

🌊

Seas

2

📅

Update

#13

How to Obtain

Use Hidden Key

📍

Location

Ice Castle

Description

Rengoku is a sword sword in Blox Fruits and slots into the broader sword tier list around the sword-rank baseline. Whether it's worth chasing depends on your build: pure-fruit mains usually skip mid-rarity swords entirely, while sword-mains and combo PvPers chain weapons to alternate movesets without the cooldown overlap that comes from spamming a single fruit. Common swords are starter-tier weapons. Use them to grind early mastery levels and immediately upgrade once you can afford an Uncommon or higher. Pair Rengoku with a fighting style that complements its swing speed — Godhuman or Sanguine Art covers any sword's M1 gap with bursty kicks, while Death Step's range trade is the classic combo extender. As a sword, Rengoku draws from your sword stat pool, so respeccing into 2,500+ sword stat is a hard prerequisite to hit its full damage ceiling. Mastery scales with hits landed; M1 spam during low-level grinding is the fastest way to climb early, then transition to skill-spam against bosses for the multiplier. It costs free / quest reward from the relevant NPC vendor, premium shop, or quest reward — keep an eye out for the related sword dealer or boss drop chain when you reach the corresponding sea. If your loadout already has a higher-tier sword, Rengoku can still earn a slot as a swap option — Blox Fruits' "Z + sword swap" tech is one of the fastest ways to chain skills without giving the enemy a recovery window.

Moves & Abilities

3 moves
M1
Normal Attack

The player does 3 slashes, then performs a lunge on the fourth.

Z
Demon Slayer
Mastery 150

The user dashes forward, leaving a trail of orange and red flames. If the user hits an enemy, the user slashes the enemy rapidly and finally releases three fire-like slashes, dealing tick damage with a burn effect. The burn lasts for around 2 seconds.

X
Burning Slash
Mastery 350

This move offers two distinct variations: * If tapped: ** The user releases a horizontal slash of flame, which leaves a trail of flame on the ground. If the slash hits an enemy, it damages them and causes burns that cause tick damage over time. * If held: ** The user's screen will first turn red like flame, then releases a huge wave of flame that deals widespread damage. Deals tick damage over time, similar to the tap variation.

Pros

15
  • Extremely high damage.
  • Good combo potential.
  • Good knockback, which is useful in PvP.
  • Both moves break Instinct.
  • Insane damage in short duration, making Shark and Cyborg users take a lot of damage before they can turn on their Race ability.
  • Dash is very fast.
  • Almost no end lag.
  • Can target multiple players.
  • Damage is still dealt as long as the target has been caught in the dash (Unless "Instinct-Tricked").
  • Deals damage over time.
  • Good range.
  • Can stun Blade users along with Saishi.
  • The flames break Instinct.
  • Breaks Instinct on direct contact.
  • Decent AoE when held.

Cons

8
  • Cannot damage Blade users.
  • Low drop chance for the Hidden Key.
  • Bad for in-water combat.
  • Difficult to grind due to dashing from the fourth slash.
  • High mastery requirements.
  • Single target. (Though the flames can damage nearby enemies if they are close)
  • The flame trail can be dodged easily if not stunned.
  • This move, along with its two variations, does not have any AoE burn when used aerially, making it significantly harder to hit (the tap variation works similarly and has a similar hitbox to awakened Dark's , the held variation works the same, just vertically).

Trivia

10
  • 1Rengoku is an easter egg that the devs added at Update 13.
  • 2Before the rework in Update 20, did not do burn damage.
  • 3Rengoku's moveset post-rework is similar to the Pipe.
  • 4Rengoku is the only katana to be out of its hilt in its icon.
  • 5can sometimes glitch the player out of the map if the flooring is thin like in Kingdom of Rose.
  • 6Rengoku's passive idle stance was revamped again.
  • 7Rengoku's model was revamped.
  • 8Rengoku's damage was nerfed.
  • 9Rengoku's moves were reworked.
  • 10Added burn damage to [Z] Demon Slayer.