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My parents, brother, sister, fame—I've discarded all of them. All I have is this sword, and the oaths I make to it.


Ouma Kurogane is the older brother of Ikki and Shizuku Kurogane and one of Japan's two A-Rank student knights. He is also a guest member of Akatsuki, a team of mercenaries hired by the terrorist group Rebellion to infiltrate and win the Seven Stars Sword Art Tournament.

Powers and Stats

Tier: 7-B, 7-A with Kusanagi, higher with Ikki no Kaze

Dimensionality: 3-D

Powers and Abilities: Superhuman Physical Characteristics, Blazer Physiology, Air Manipulation (Can use his wind offensively, as a passive shield, create vacuum orbs that explode on contact, create a powerful updraft to deprive his opponent of oxygen, create a vacuum which can boil and vaporize his opponents' fluids, or make his strikes faster and sharper by manipulating air resistance), Sword Mastery, Invisibility (Can use wind to bend the light in his surroundings to turn himself invisible), Forcefield Creation (Can create a barrier around himself), Pain Tolerance (Type 2; He remained standing after enduring strikes from Stella using Dragon Spirit despite being burned from the inside. Ouma could endure high voltage, as well as severe damage to his bones and organs from the Union's Strongest Blazer, Abraham), Spatial Manipulation (Shin'uchi compress the enormous tornado of Kusanagi using the magic he took from the natural wind into the form of a blade of light slightly larger than his Ryuuzume, which Abraham stated possesses the power to twist the space of the world)

Attack Potency: City level+ (Superior to an amped Stella), Mountain levelwith Kusanagi (Comparable to Stella's Katharterio Salamandra, which is above her Dragon Spirit), higher with Ikki no Kaze (His strongest Noble Art, able to one-shot Abraham Carter)

Speed: Relativistic (Blitzed Stella), FTL+ with Amaterasu (Amaterasu was stated to exceed Dragon Spirit Stella's reactions)

Lifting Strength: Class M (Should be at least comparable to Stella)

Durability: Mountain level (Got up after a punch from Dragon Spirit Stella)

Stamina: Ouma has enormous stamina that allows him to fight for extended periods of time without exerting himself.

Range: Extended melee range with Ryuuzume, Tens of meters with magic

Standard Equipment: Ryuuzume; his Device which is a white Nodachi

Intelligence: Ouma is an incredible skilled master swordsman, having trained in the Kyokujitsu Isshin-ryuu of the Kurogane Household. Ikki later noted that there wasn't much difference in sword skills between him and his brother, which is further supplemented by his strength and magic.

Weaknesses: Very arrogant, doesn't know when to retreat, usually refuses to fight against weaker opponents, Kusanagi gets weaker with each use after the third, destroying Ryuuzume should deal enough mental damage to knock him out


Notable Victories:

Notable Losses:

Inconclusive Matches: