Rengoku is a Legendary-tier sword added in Update 13.
Obtainment

Location of the secret door.
To get Rengoku, first...
- Obtain a Hidden Key from the Awakened Ice Admiral (around 5% drop chance) or other NPCs around the castle.
- Find the secret door on the right side of the stairs inside the castle's main room, where the Awakened Ice Admiral spawns.
- Touch the chest with the key in your inventory. You should receive the sword and a title. (Note: Dying or leaving the game will result in losing the key.)
Abilities
Pros
- Good travel distance.
- Great damage, 2nd highest in the game.
- Can be used with a lot of new fighting styles such as Electric Claw Dragon Talon
- The X move has great AoE and breaks Observation with the burn.
- The Z move's dash is very fast, goes far, and has little to no endlag.
- This makes it good to counter Dark V2 or Superhuman combos
- Good combo potential due to stun and fire damage.
Cons
- The Z move can only hit one target, and has a small hitbox.
- The Z move can be dodged using Observation.
- Low drop chance of the hidden key
- The X move is short range.
Combos
- Basic combo: X + Z.
- Energy core + Ice awakened V + Kabucha X + Dragon Talon X + Dragon talon Z + Rengoku X + Rengoku Z + Ice C + Soru + Dragon Talon C. ( can one shot 5m - 15m bounty ).
- A combo with Ice and Sharkman is: (Non-awakened) Ice V - Kabucha X - Rengoku X - Rengoku Z - Sharkman Karate C - Sharkman Karate X - Sharkman Karate Z. This combo is one-shot, and it is not necessary to add the Sharkman Karate Z if not needed, but if the opponent still has health, use Sharkman Karate Z.
- Superhuman Z - Rengoku X - Rengoku Z - Superhuman C + (Soru to enemy) Superhuman X
- Awakened Dark X/C - Kabucha X - Superhuman C - Rengoku X - Rengoku Z - Dark F/Soru - Superhuman X
- Awakened Dark X/C - Sharkman Karate X - Sharkman Karate Z - Rengoku X - Rengoku Z - Sharkman Karate C
- Kabucha X - rengoku X and Z - superhuman C
- Door X - Kabucha X - Rengoku Z,X - Dragon Talon Z, X, Soru, Talon C
- Revive Z - Kabucha X - Rengoku X,Z - Dragon Talon X,Z
Trivia
- The sword bears resembles to the sword of Kyojuro Rengoku from Demon Slayer: Kimetsu No Yaiba anime/manga.
- This sword deals the 2nd highest damage( with the burn effect). Losing only to Saber v2 (when landing a critical hit on Z). Without a critical Z Rengoku would surpass Saber v2 in terms of damage. ( this info is out of date, this was info from update 12 - 14 )
- Rengoku's Enhancement color will always have a red outline even if you equip a different Color.
- This sword was actually an easter egg that the devs added at Update 13.
Sword Navigation |
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Katana, Cutlass, Dual Katana, Iron Mace, Triple Katana, Pipe, Shark Saw, Dual-Headed Blade, Soul Cane, Bisento, Trident, Pole (1st form), Dark Blade, Saber, Longsword, Gravity Cane, Saddi, Wando, Shisui, True Triple Katana, Jitte, Koko, Midnight Blade, Rengoku, Pole (2nd Form), Dragon Trident, Yama, Tushita, Dark Dagger, Canvander, Twin Hooks, Hallow Scythe, Buddy Sword, Spikey Trident |