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I seek power, power inexorable. I seek defeat, defeat inevitable. For an A-Rank knight like me, the only one who can give this to me is Stella, who possesses that absolute magic. And… if I can overcome it… if I can do that, then perhaps this hand of mine will tremble no more.
—Ouma Kurogane
Ouma Kurogane
Ouma profile pic.png
Kana 黒鉄 王馬(くろがね おうま)
Romaji Kurogane Ouma
Profile
Gender Male
Age 17
Nickname/s Sword Emperor of Wind
Hair Color Black
Eye Color Light Brown
Personal Status
Relatives Ryouma Kurogane (Great-Grandfather) †
Genma Kurogane (Grandfather)
Itsuki Kurogane (Father)
Unnamed Mother
Ikki Kurogane (Younger Brother)
Shizuku Kurogane (Younger Sister)
Affiliations Akatsuki
Kurogane Family
Status Active
Blazer Status
Ranking A-Rank
Physical A
Luck C
Offense A
Defense A
Magic Cap B
Magic Ctl C
Voice Actor

Ouma Kurogane is the oldest and firstborn child of Itsuki Kurogane and his unnamed wife, making him the older brother of both Ikki and Shizuku Kurogane. Before Stella's enrolling in Hagun Academy and Shizuku's promotion, Ouma was the lone A-Rank Student Knight in Japan who had won the Little League earning the nickname Sword Emperor of the Wind.

Seeking real-life battles outside the sanctioned tournaments, Ouma traveled around the world, joining Akatsuki Academy after hearing about another A-Rank, Stella Vermillion entering the current Seven Stars Sword Art Festival.

Appearance

Ouma is… different. It's true that they look similar outside, but he does not have that gentleness. What he has is only a sharpened strength which deviates from normality. That… the blank in that painting… it wouldn't be suitable for the figure of the Messiah in the center. …Even you, aiming to win in this Festival, would not be content with second place.
—Sara describing Ouma

Overall, Ouma is a young man who bears a strong resemblance to his father and brother, differing from the latter, he appears more intimidating. He has long black hair that extends passed his back with long fringes covering his forehead and light brown (almoust yellow) eyes. Most notable, he has a large X-shaped scar running across his face and underneath his clothes, there are a plethora of healed wounds ranging from cuts, lacerations, punctures, and bullet holes. In Volume 18, at some point, Ouma cut his hair shorter, around the same length as Ikki's.

His clothes consist of a black shitagi that appears to have grayish wind designs in the upper portion of the shirt, a black kosode that has grayish wind designs on both of the sleeves, a white sleeveless haori, a white sash around his waist, white tabi, and waraji. During the Sword Art Festival he wore black kimono

Personality

If I had to said what impression I have on him. he was an incredibly stoic person. —Being born meant becoming strong…he was that sort of person
—Ikki describe Ouma to Stella

Stoic and solitary, Ouma is a man of little words and interests in anything aside from fighting powerful opponents to test the limits of his strength as described by his younger brother. Because of this, he sought to fight against a fellow A-Rank such as Stella but was disappointed that she lost against him easily. Although, his confidence in his own abilities could be viewed as arrogance as he refused to enter the previous Seven-Stars Sword Art Festival to fight against either Yuudai and Touka viewing them as not worth the challenge, Ikki states that his boast matches his power. He was also well aware that there are people who're stronger than him such as Nene and the Tyrant.

Despite being apart of Akatsuki, Ouma had no interest in their goals or desires, which includes that of his father's as well. He has disrespected those older than himself and his superiors, as he referred to Nene by her short child-like stature and later ignore Bakuga's praise. Although he was prowen to be calm and patient, he can also be merciless when wanting to achieve his desires to where he even almost killed Ikki, his little brother, viewing him as nothing more than a hindrance for Stella to achieve her full potential. This mindset stems from both his defeat after facing the Tyrant and his desire to stand at the summit of the world he loves, which causes Stella to compare him to Ikki. Similar to his younger brother Ouma has an indomitable will and absolutely refuses to give up on his goals even if it costs him his life. Even though he himself was aware that his ambition was childish and selfish, he persistently held on to his sincerery which makes Stella refer him as a being more pure than anyone. Ouma is also rather brief and strict, does not like to be repeated or explained in more detail as he was annoyed Ikki's persistence to make him do so after he told him to withdraw from the Seven Stars Sword Art Festival yet still did it nevertheless.

Despite his antagonistic and cold behavior, Ouma can't be referred to as being evil and has shown some positive traits, which was shown as he defended the audience from Stella's Bahamut Howl. He joined Akatsuki based on his father's request; allowed Ikki to remain in his room to avoid Stella and Sara, warned him about Amane, and even helped him prepare for his fight against Stella in the finals. Ouma was also disgusted about the torture that Rinna and Sara were put under by Abraham to the point of abandoning his pride and using Kusanagi - Shin'uchi, as well as not viewing him as a foe to challenge but as an existence needed to be erased.

History

Five years prior, Ouma left the Kurogane Household after winning the Little League and U-12 World Tournament in elementary school feeling that he couldn't overcome his limits in a warm environment. He then left Japan and travel to places with real battles such as slums and underground arena. During that time, Ouma met the Abraham Carter, a clone of Adam Goetia, the leader of Rebellion, and was almost killed if not for the interference of Edelweiss. Following the incident, he was struck with fear and realized that in order to be in the same area as the Tyrant, he needed a metamorphosis and for that purpose, he soon bounded himself in his Tenryuu Armor in order to trigger that himself and began to seek out a worthy opponent for that purpose, wanting to stop the tremble he has had in his hand ever since.

Ouma was also a rival of both Yudai Moroboshi and Renji Kaga during their youth.

Plot

Selection Battle Arc

Incident at Okutama

Ouma appears along with Reisen Hiraga who was sent to test the ability of Tohka Todo. Ouma, however, was having more interest in Stella, claiming that she's the only reason he joined them and if Stella isn't up to the level then he isn't interested in her. Hiraga also notes that Ouma is rather troublesome, preferring his brother, Ikki.

Seven Stars Sword Art Festival Arc

Akatsuki Strikes

Ouma is seen with his fellow Akatsuki members attacking Hagun Academy, being able to destroy the school quite easily.

Ouma activating Kusanagi.

The Hagun representatives of the Festival training but quickly arrive, being able to defeat Ouma and the others easily. It's revealed however that the Akatsuki members were all illusions created after Amane had seen the future, telling that Nagi would betray them. He later challenges Stella to a duel, easily overpowering her Katharterio Salamandra with his Kusanagi. He was then challenged by Tohka, after the other Student Council members had fallen, who tried to halt Ouma from chasing Stella and the Hagure Sisters but was easily defeated by Ouma.

Ouma and the other Akatsuki members eventually catch up to the Hagure sisters and Stella but they are stopped by Nene who is able to stop all the Akatsuki members except Ouma who planned on taking on Nene. He is, however, stopped by Hiraga who is able to persuade Ouma from attacking Nene, as they had already done what they had planned to do. Ouma and the others then retreat.

Dinner and Confrontation

Later just before the Festival, Ouma is noticed by Ikki, while Ouma was stalking Ikki and his companions during their outing. After Ikki is able to separate himself from the others he calls out Ouma. Ouma explains that he wants Ikki to quit the tournament as he is a blocking stone of Stella, keeping her from her true potential. When Ikki refuses to drop out of the tournament, Ouma decides to use force and draws out his Device and in response, Ikki does the same and a battle between brothers ensues.

Ouma has the advantage in power over Ikki having far more magic and physical power than him. Ouma quickly becomes tired of fighting against Ikki and uses Mukuu Kekkai to force Ikki to end the fight in less than sixty seconds. Ikki was nearly able to cut Ouma but for some reason stopped at the last moment allowing Ouma to hit Ikki with the full force of his blade, causing Ikki to lie helpless as Ouma charged up for his all-powerful Noble Art, Kusanagi.

Ouma unleashes Kusanagi, however, it is destroyed, along with Mukuu Kekkai, before it can hit Ikki. It is then revealed that Yudai Moroboshi, the current Seven Stars Sword King, had come to Ikki's aid, and used his magic destroying Noble Art, Tiger Bite, to save Ikki. Ouma decides he has enough fighting and decides to leave.

Conclusion of the First Match

Ouma wins his first-round match in the Festival, advancing to the second round.

Ouma and Ikki.

Ouma later meets with Ikki again, in the hotel where the competitors are staying. Ikki, who is being chased by Stella and Sara Bloodlily, asks to stay in Ouma's room for the night. Ouma at first rudely rejects Ikki, telling him to go and borrow any of his friend's rooms, and notes on his lack of respect for his senior despite asking for his help but Ikki's cold statement of the reason being Ouma working with a terrorist caused Ouma to begrudgingly accept. As Ouma and Ikki settle down, Ouma notes that Ikki probably has another reason for coming to him, which Ikki admits to being that he wanted to talk to his brother on civil terms. Ikki tells Ouma that he used to admire his older brother, because of his grit and dedication, knowing that Ouma could never be satisfied with fighting weak opponents. This, however, makes Ikki question Ouma's reasons for associating with a crooked organization like Rebellion, which is leading Akatsuki. Ouma corrects Ikki, saying that he is just a guest and not an associate of Rebellion. He is helping them because of his and Ikki's father, Itsuki Kurogane, who asked Ouma to, as Itsuki is supporting Akatsuki's leader's, Bakuga Tsukikage's, ideas of splitting from the League which would bring more power to the Kurogane Family. Despite this, Ouma's main reason was still facing Stella, wishing to fight a strong opponent. He admits to not knowing nor is he interested in Tsukikage's true thoughts.

Ikki notes that Ouma really is captivated by Stella, wondering why Ouma didn't attack him like earlier. Ouma explains that after seeing how much stronger Stella has gotten, he no longer sees Ikki as an obstacle for her. As Ikki asks why Ouma is going specifically after Stella and not other strong adult knights, Ouma mocks his brother for lacking understanding of the concept of a knight's power and constantly using his swordsmanship, referring to it as being "parlor tricks". Ouma explains that everyone has a certain fate, which decides their natural amount of magic power. Stella has one of the greatest amounts of natural raw magic power, which Ouma seeks, not wanting to simply fight an unwinnable battle against the likes of the "Yaksha Princess" or "God of War", instead of wishing to overcome a challenge of power, to stop his hands from trembling. They then go to sleep, with Ouma saying that he might have been a little wrong about Ikki. He warned Ikki that he had caught the eye of someone very troublesome, referring to Amane Shinomiya, and should best prepare for terrible retribution.

Seven Stars Sword Art Festival Third Round - Beginning

Ouma, having easily won his last two matches of the Seven Stars Sword Art Festival, faces the ace of Rokuzon Academy, Renji Kaga. Despite Renji's strength and speed, he is unable to damage Ouma, and Ouma in turn easily cuts Renji, and strikes his hand through his chest, ripping out his heart in the process. This act of cruelty shocks the audience, but Stella Vermillion claps at Ouma's showcase of strength.

Ouma during his match against Stella.

A Pair of Dragons' Rivalry

In the semifinals of the Festival Ouma faces Stella Vermillion, who he has been wanting to fight from the beginning of the Festival. They exchange powerful blows, with Stella using techniques like Broken Arrow and Satan Fang, while Ouma counters with brute force and Fuujin Kekkai. Stella tries hitting Ouma with a surprise attack but manages to only injure her own arms when she hits Ouma. They then clash swords and Ouma manages to damage Stella's internal organs with a kick. This leads to Stella figuring out the secret of Ouma's defense. Ouma has been surrounding his body with extremely high pressured air, which has strengthened his body.

Ouma then tells about his encounter with the Rebellion leader Adam Goetia, and Ouma's defeat to him, which lead Ouma to join Akatsuki. Ouma then releases his Tenryuu Armor, which tremendously raises his speed. He then attacks Stella with an onslaught of attacks, but Stella manages to endure them. She then activates her most powerful technique, Dragon Spirit. This technique tremendously increases her physical strength and speed. Her attacks are also surrounded by fire. Ouma is unable to match Stella in this form and is finally defeated in the clash off their attacks, Katharterio Salamandra and Kusanagi. This leads to Ouma being eliminated from the Seven Stars Sword Art Festival.

Rising Spirit

Ouma later arrives to battle against Ikki, to help him train for his upcoming battle against Stella in the finals. Ouma was asked by Ikki to come, with Ouma agreeing as he wants to test Ikki's strength. Ouma has the advantage in the battle, having superior power and durability, but Ikki is capable of keeping up with him, using his swordsmanship knowledge. Ikki also catches Ouma off guard and actually pushes him back, with his newly created third sword technique, Madoka, which directs back one of the powerful slashes of Ouma. This surprises Ouma, who wonders if Ikki's trickery is a kind of strength. Ouma then decides to take the fight seriously and activates his wind manipulation ability. The outcome of their battle is unknown, though Ikki is seen arriving at the finals, with no serious injuries. Ouma then traveled to Osaka the day before celebrating Ikki's victory over Stella at the festival. His current location and goals are unknown.

Abilities

Wind Manipulation: Ouma's ability as a Blazer. He can generate and manipulate wind, which he uses for offense and defense to an amazing extent. From subtle uses such as bending light to make himself invisible; rendering air resistance void, letting him wield Ryuuzume with great speed, letting him releases slashes faster than Edelweiss' Testament (likely her double); and create vacuum orbs that explode on contact.

  • Pseudo Mana: Being a Natural Interference Blazer, Ouma can absorb natural wind, then convert that to his own power as pseudo-mana, letting him use more magic than normal.
  • Tenryuu Armor (天龍具足(てんりゅう ぐそく) Tenryū Gusoku, lit. "Heavenly Dragon Armor"): A Noble Art, where he covers himself in high-pressure air, which he uses to both protect and train himself, putting a tremendous load on himself while lessening his speed as long as he's wearing it. He can also put this armor on another person, making them appear invisible by bending light, while removing the previous load.

Immense Strength: His most notable feature is his tremendous physical condition gained from rigorous training, surpassing Stella using natural strength, being comparable to Iris. Ouma withstood Nene's Jibakujin without flinching, even being able to concentrate his strength to leave a fissure in the ground without causing vibrations and pierced Renji's steel skin using his bare hands. After releasing his Tenryuu Armor, he could release vacuum slashes using pure arm strength, sent Stella through reinforced concrete, threw back a tank shell, and resisted Abraham's telekinetic powers, which he couldn't do in the past.

Immense Durability: He has tremendous durability able to withstand Raikiri several times head-on without any harm, Tohka even compared him to a mountain and received a minor wound from Takemikazuchi. His ridiculous defense was due to Ouma pushing himself to the limit using his Tenryuu Armor, letting him endure strikes from Renji which Stella couldn't do and was compared to steel. He later endured a powerful strike from Abraham Carter's Noble Art and continued fighting.

Immense Stamina: Ouma has enormous stamina, endurance, and pain tolerance that borders passed common sense, which is further attributed by his will. Being able to tank attacks from renowned Student Blazers such as Raikiri and Panzer Grizzly without serious injuries. 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.

Immense Speed: He has amazing speed, even while weighed down by his wind armor, letting him keep up with Ikki and Stella without issues. After releasing his Tenryuu Armor, Ouma could shorten the distance between him and Stella in an instant, while still being agile enough to avoid strikes from her in Dragon Spirit even with his armor on him.

Master Swordsmanship: Ouma is an incredible skilled master swordsman, having trained in the Kyokujitsu Isshin-ryuu of the Kurogane Household, further honing his skils in his travels. 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. He was able to overpower Stella in sword skills alone and landed strikes on her using Dragon Spirit.

  • Gou no Kiwami - Karai (剛の極・火雷(ごうのきわみ ほのいかずち) Highest of Sturdiness - Fire Thunder): A technique, where Ouma delivers a strong diagonal slash using his sword in his right hand, then follows up with a strong punch using his left, which further supplemented using his tremendous strength sent Stella backward with enough force to break through reinforced concrete walls.
  • Jin no Kiwami - Amaterasu (迅の極・天照(じんのきわみ あまてらす) Highest of Swiftness - Heavenly Shine): A secret technique, in which Ouma delivers an extremely fast slash using all his muscles in conjuncture using the rebound from the twisting of his body with his spine, further supplemented using his natural strength reached the same speed as Ikki who learned Edelweiss' Swordsmanship and wounded Stella using "Dragon Spirit".
  • Retsu no Kiwami - Amatsukaze (烈の極・天津風(れつのきわみ あまてらす) Highest of Sequence - Heavenly Crossing Wind): This is a technique taught among the Kurogane Household for generations, where Ouma delivers a continuous 108 combo of slashes, which overwhelm his targets using sheer speed and power.

Willpower: Similar to his little brother, Ouma has an incredible will, which has allowed him to continue forward where most would surrender. This allowed him to achieve his long-sought metamorphosis enduring being bound by high-pressured air for years. He could still use Kusanagi against Stella's Katharterio Salamandra while in Dragon Spirit despite being half-dead and remained standing despite being unconscious. After this battle, Ouma overcame his fears of the "Tyrant" and faced against his true foe, Abraham Carter.

Keen Intellect: Despite not attending school since middle school, Ouma has abundant real-life experience from his travels. Akin to his little brother, he is perceptive enough to see through his opponents' powers and skills in a battle, able to tell that Ikki received a "gift" from Edelweiss, Stella's power after using them, and could understand the nature of his Madoka after being pushed back.

Battle Intuition: Due to his real-life combat experience, Ouma has attained heightened natural combat instincts and senses, able to see through Ikki's Shinkirou.

Immense Mana: Despite not having as much compare to Stella and other A-rank Blazers, Ouma's mana capacity is still immense, as he hold his Tenryuu Armor on him constantly active for years without affecting the power of his other Noble Arts and use his strongest technique three times in very short amount of time. He can also absorb the surrounding wind to temporary increase the amount of his mana when it's necessary.

Magic Control: While not on par with Shizuku or Stella, Ouma has a high degree of magic control, being able to use his wind-based magic in multiple methods. His control is such that he can strengthen or dispel his Noble Arts at a moment's notice.

Device

Ryuuzume (龍爪(りゅうつめ) Ryūzume, lit. "Dragon Claw"): Ouma's Device takes a form of an over a meter long white Nodachi.

  • Kusanagi (月輪割り断つ天龍の大爪(クサナギ) Kusanagi, lit. "Moon Severing Sky Dragon's Talon"): This is his most powerful Noble Art similar to "Katharterio Salamandra", where Ouma pours his magic inside his Ryuuzume creating a windstorm that is able to suck in everything around him including the atmosphere surpassing 50 meters in height. At full strength, it could overpower Stella's strongest move, turning the school building, the practice area, and paving into rubble. Kusanagi, however, has a flaw as its power drops with each usage, in evidence when Ouma noted a decrease in power by the third usage during his short fight against Nene.
    • Shin'uchi (真打(しんうち) Shin'uchi, lit. "True Hit"): This is the true form of Kusanagi, which he couldn't realize using his own power, where he continues to compress the enormous tornado using the magic he took from the natural wind into the form of a blade of light slightly larger than his Ryuuzume. This technique terrified even Abraham who had stated that the thin wind blade possesses the power to even twist the space of the world.
    • Ikki no Kaze (一伐の風(いっき かぜ) Ikki no Kaze, lit. "Wind of Single Strike"): His most powerful Noble Art, which can be used after Kusanagi – Shin'uchi is activated, where Ouma slashes everything within 500 km of the route where Ryuuzume is swung in a straight line. It was powerful enough to kill Abraham.
  • Shinkuuha (真空波(しんくうは) Shinkūha, lit. "Vacuum Wave"): A popular and common offensive Noble Art amongst wind users, which tears through the air, creating a small corridor of vacuum. These vacuum slashes move at high speeds and are nearly invisible.
  • Mukuu Kekkai (無空結界(むく けっかい) Mukū Kekkai, lit. "Airless Barrier"): Ouma creates a powerful updraft to deprive his opponent of oxygen. It also serves to momentarily distract the opponent and has a considerable range.
    • San ((さん) San, lit. "Tragedy"): A more lethal version of the original, where he creates a vacuum, which can boil and vaporize his opponents' fluids, their bodies' decaying a lot like trees.
  • Fuujin Kekkai (風神結界(ふうじん けっかい) Fūjin Kekkai, lit. "Wind God Barrier"): A defensive Noble Art, where Ouma stabs Ryuuzume into the ground, creating a tornado around him. It was strong enough to block Satan Fang, which was comparable in power to Raikiri.
  • Ryuugan (龍眼(りゅうがん) Ryūgan, lit. "Dragon Eye"): This is a Noble Art, where Ouma read and listens to the wind, following the traces of magic power scattered in the wind in order to locate his targets.
  • Jinsepuu (刃旋風(じんせんぷう) Jinsenpū, lit. "Blade Whirlwind"): This is a Noble Art, where Ouma slashes Ryuuzume releasing a slashing tornado in a single direction, which slices multiple targets.

Trivia

  • Ouma is (王馬) combine with the kanji for "King/Monarch" and "Horse".
  • Ouma was claimed to be the only A-Rank Apprentice Knight in Japan, which is proven untrue as Amane Shinomiya is also an A-Rank Blazers.
  • Ouma shares many similarities with Stella:
    • Both are highly talented and praised A-Ranks from well-respected families.
    • Both of them have strong dragon motifs in their titles and noble arts.
  • Ouma's fastest sword technique, Amaterasu, is named after the Shinto's Goddess of the Sun, Amaterasu, while Ouma's signature Noble Art Kusanagi is named after Amaterasu's sword of the same name.
  • Despite his lean frame, Ouma is exceedingly heavy. Due to his extremely dense bones and muscles, he weighs about five hundred kilograms, making him heavier than Renji Kaga. Due to his extreme training, he has also shortened his lifespan.
  • Since the start of his career as a Blazer, Ouma officially lost once against Stella in the 62nd Seven Stars Sword Art Festival and unofficially against Adam Goetia in the past.
  • Ouma's quest to test his limits could reference the concept of Musha Shugyō.
  • Ouma is the third Blazer to kill a Desperado without needing to be one himself, but managed to do so alone. However, the one he faced was a clone, albiet likely superior one among the others and wasn't a "True" Desperado.

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