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[color=black]Kousai Agatsuma[/color]
[color=#E5E4E2] Kousai Agatsuma
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[center][color=red]A g e:[/color] 20 | [color=black]R a n k:[/color] [color=fff200]Rumble Hashira[/color][/center]
[b][u][sup][color=red]P e r s o n a l i t y[/color][/sup][/u] :[/b]
Kousai can be summed up, more or less, in one word: cool. There's a natural calmness that exudes from him, which is evident in his every day interactions with the people in his surroundings. He's confident, but never arrogant. He approaches everything with an open ear and never looks down at others, even when they make mistakes. Kousai is an invaluable source of advice and encourages others when they're facing difficulty, preferring a person try to overcome their troubles then spoon-feeding them all the answers. This makes him quite approachable in conversation and can often be seen talking to members of the Demon Slayer Corp.

He possesses a keen intellect, not just in scholarly subjects, but in analyzing opponents and figuring out attack patterns. Even during difficult times, he remains relaxed and even-tempered. When fighting, he never shows signs of distress or worry. Instead, he remains focused on the task at hand. His patience allows him to gradually wear down an opponent until he finds his opening to counter attack. These traits make him a formidable opponent. Of all the members within the Corp, Kousai possesses the most self-control when it comes to fighting. 

When performing, he typically enters a form of trance. He described it at as having the world muted and only his music can be heard. He feels the beat in his chest and lets his hands take control. Kousai stated that it is his main passion has always been music and has spent a life learning as much about the guitar as he can. Though he's admitted that the bass guitar is the instrument that really helps him express his true feelings.

[b][u][sup][color=red]S h o w a  S e c r e t[/color][/sup][/u] :[/b]
The day that Kousai was born a star shined bright but, that star was followed by another star, bringing Kousai's twin brother [url=https://i.pinimg.com/736x/c4/bb/49/c4bb49dc106b6ee9dd5a98e260133dc1.jpg]Tousai[/url] into the world. A blessing to the Agatsuma and Kamodo clans, the boy were showered with love from the day they were born. From the moment the boys could walk, they were taught to be demon slayers. Fortunately for them, they got to meet their great grandfather, the legendary Zenitsu Agatsuma. Despite his age, Zenitsu saw the boys as much as he could, even helping them learn what it meant to be demon slayers. Kousai loved his great grandfather, always happy to see him, playing with the old man as much as he could. Unfortunately he only got 5 years with the old man as old age would finally take him, leaving a hole in the world that could never be filled. 

As the boys grew older, the closer they got, Kousai vowing to always watchout for his twin brother. He loved him and pushed him to take up Flame Breathing whilst he took up Thunder breathing, both boys complimenting each other's chosen style. Kousai was considered a prodigy, understanding Thunder Breathing on a level that his peers could not, his mind always racing with ideas to improve, the determination to succeed pushing him farther and farther. That wasn't the only thing that he came to love, finding a love for music. It was something about the guitar that let his ears pick up the music. For him, slaying demons and creating music was his shining star, giving him hope that the future was safe, a future that would soon shatter.

Life would take a turn for the worse when the twins were faced off against Demon Consort 4. Kousai had asked for a month for the corp to allow him to investigate a slew of disappearances in Kyoto, but no one believed him, not even his own father. Taking it into his own hands would lead to finding out there was a Demon Consort nestled within Kyoto, and she was not to be taken lightly. The boys fought and fought to try and defeat the consort, their teamwork proving to be their key to success, even beheading the consort, but that would not be enough to stop a demon of her magnitude. The battle with the consort would be prove to be fatal, not for Kousai, instead for Tousai, taking a blow meant for his big brother. Kousai screamed out, unable to mourn his brother as Tousai was torn to shreds, leaving only his blade behind. Intending to avenge his brother, he fought harder than even before, using his ability to change his perception and speed on a dime to fight a demon who had already proven to match his speed. Despite his wounds, he was able to old off the consort, cutting her to ribbons till the sun rose, burning her away. The only thing left behind from battle being Tousai's nichirin blade, a symbol of his hatred for the demons and also his contempt for the Corp for not listening to him.

Two years have passed since Kousai's ascension to Rumble Hashira due to defeating a Demon Consort, one of the few to achieve the feat. Estranged from his father, and keeping the corp at arm's length, Kousai has joined up with the Yakuza as a way to find purpose in this world and fight against the demons on his own terms. During the day, he has taken up the profession of a musician, playing his bass guitar for all those that would listen, even joining a band. This was his life, and Kousai would make the most of it, if not for himself then for the bright star that faded two years ago. 

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[color=black]'K o k y ū'[/color]
[color=#E5E4E2] 'K o k y ū'
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[b][u][sup][color=red]F l a m b o y a n c e[/color][/sup][/u][/b]: 
Thunder Breathing is a Breathing Style that mimics lightning, specifically swift strikes and movements akin to lightning ripping through the sky, and replicates it with the user's movements, techniques and abilities. Most, if not all, known techniques and forms involve utilizing blinding speeds and immensely fast attacks to overwhelm the enemy in an instant. Users of Thunder Breathing also visualize themselves seemingly creating and manipulating lightning and electricity when unleashing its techniques.

It has been remarked by Zenitsu Agatsuma that this Breathing Style focuses on channeling strength into the user's legs, and maximizing the output of every single muscle and blood vessel in them.[1] Users also mimic lightning to such high fidelity that they cause the air to vibrate when poised to unleash a technique and create immensely loud sounds akin to thunder with their mere footsteps.

✧ [b]Form 1-7 : [url=https://kimetsu-no-yaiba.fandom.com/wiki/Thunder_Breathing]Thunder Breathing[/url][/b]
✧ [b]Form Eight: Rumble and Roar[/b] The user initiates this form by dashing forward and unleashing a singular stab attack that creates a spear shaped lightning bolt attack that pierces through the target.
✧ [b]Form Nine: Divine Wrath[/b] The user unleashes eight curved slashes in rapid succession before rapidly moving around the opponent, unleashing more slashes and ending with a final, overhead slash that curves downwards, similar to the Blazing Universe technique of Flame Breathing. 
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[color=black]'N i c h i r i n'[/color]
[color=#E5E4E2] 'N i c h i r i n'
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[b][u][sup][color=red]B l a d e   W o r k[/color][/sup][/u] :[/b] Kousai carries around a standard sized and shaped Nichirin katana with yellow lightning streaks along the entire blade. His sword's tsuba is circular shaped with four slight indentations. Its core has a silver tone with small triangles and a golden border. The handle is yellow and wrapped in white silk ribbon. The base of the handle is gold with two short, white ribbons hanging from it.

He also carries his twin brother's nichirin blade on his hip. 

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[b][u][sup][color=red]U n i q u e   T r a i t s[/color][/sup][/u] :[/b]
Enhanced Perceptiveness: Kousai has shown the ability to use his Breathing Style to increase his movement speed and reaction speed at a constant rate, allowing him to out-speed and outmaneuver his opponents. In addition, he has shown the ability to increase his speed so much that he perceives the world as if it were in slow motion, allowing him to attack his opponents faster than they can react. In addition to his mastery of his Breathing Style that allows him to speed up, he has shown on multiple occasions rapid switches between this altered state and his normal one, allowing him to confused opponents. An example of this was in his fight against the Demon Consort, he was able to rapidly switch between them and perform rapid stop-and-go maneuvers that allowed him to better dodge attacks, seeing as his opponent could keep up with him even when using increased speed.[/hider]