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Zero executing Kūenzan.
"With the correct timing, higher and further jumps are possible while airborne. Kuuenzan may be activated while attacking in the air."
―In-game text, Mega Man X4

Kuuenzan or Kūenzan (空円斬? lit. "Air Circling Slash"), is one of the two special techniques that Zero learns after defeating Split Mushroom in Mega Man X4. This technique is based off Split Mushroom's ability to perform jumping somersault moves. By pressing the attack button while airborne, Zero preforms a circular slash with his Z-Saber. Once Zero learns Kūenzan, it permanently replaces his midair saber slash for the remainder of the game. Unlike his normal midair saber slash, Zero can famously change directions left and right for the duration of the slash, enabling some exploits for hits and damage.

Other appearances

In Tatsunoko vs. Capcom and Marvel vs. Capcom 3: Fate of Two Worlds, this is the only command art to be a normal attack of Zero, with it being his jumping H (aerial heavy attack). Zero also has a backward Kuuenzan as a midair command normal (down + Heavy during jump), where he will turn to face his opposite direction to do the slash. This is a nod to most players turning around during the attack for more skilled exploits of the attack's duration. The backwards version has more startup than the normal j.H version in TvC, while it starts up much faster in MvC3.

Damage Data Chart

Damage values in units in Mega Man X4.

X4-Icon-Zero-Kūenzan Kuuenzan
Boss Damage
Egergion --
Web Spider 3
Split Mushroom 2
Cyber Peacock 2
Storm Owl 2
Magma Dragoon 2
Frost Walrus 3
Jet Stingray 2
Slash Beast 2
Tentoroid 1
Generaid Core 2
Eyezard 2
DG-42L 2
Colonel 2
Iris 2
General 4
Reaper Sigma: 1st Phase 0
Reaper Sigma: 2nd Phase 3
Giant Face Sigma 2
Cannon Sigma 3
  • Minibosses such as Tentoroid and DG-42L do not have an invincibility period when struck, so Kuuenzan can deal a tremendous amount of damage as it can inflict multiple hits. Damages listed on this chart is damage dealt per hit, not the total amount of damage done.
  • Once Kuuenzan and Kuuenbu have been learned, it will replace Zero's mid-air slash for the remainder of the game.

Similar techniques

While not named Kuuenzan, an aerial circular slash becomes a staple in Zero's list of skills, appearing in several games after Mega Man X4. The C-Sword (Mega Man X5), Ensuizan (Mega Man X6) and Rasetsusen (Mega Man X8) are alternative versions of this technique, and it is one of Zero's Action Trigger attacks in Mega Man X: Command Mission, Zero Skull Crush (零式兜割 Rei Shiki Kabutowari?, "Zero Style Helmet Splitter").

It appears in all games from the Mega Man Zero series, where Zero either needs to relearn it, enable it via the Active Form, have the Cyber-elf Malthas, or equip a chip to make use of the technique. He can also perform a ground based version, which has him rolling forward after a dash while attacking. The move also appears as Zero's jumping H.P. in SNK vs. Capcom: SVC Chaos.

In Mega Man ZX and Mega Man ZX Advent, Mega Man Model ZX has the Rolling Slash (ローリングスラッシュ?) skill available from the start.

Omega and Model OX also have a rolling slash technique, Arc Blade.


See also

Counterpart to this Technique

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