Giyuu Tomioka

— Appearance — Giyuu is a fairly tall young man of a lean muscular stature and pale complexion, consistently seen wearing a stoic expression. He has raven-black hair of uneven lengths, with jaw length side-bangs, a low messy ponytail at the base of his neck, and bangs falling over his eyes in a choppy fringe. His eyes are sharp and moderately large; his irises are lapis blue that fades into a lighter shader at the lower part, surrounded navy blue pupils. His irises are sometimes completely opaque and empty. His eyes are framed by thin eyebrows.

— Giyuu's Hashira Uniform — Giyuu wears the standard Demon Slayer Corps uniform, colored black in the manga and tinted charcoal blue in the anime. It consists of a button-up jacket with a stand-up collar and long sleeves. Additionally, it features gold buttons and a shirt pocket on the left breast, with the kanji for Destroy (滅めつ,Metsu)engraved on the back of the uniform. Beneath the jacket, he wears a white long-sleeved collared undershirt. The uniform is fastened at the waist with a white belt and includes a pair of matching tattsuke-hakama pants, wrapped at the calves with buttoned white kyahan. On his feet, he wears tabi socks that match the tone of his uniform, along with white zōri sandals with navy blue straps. Over this, Giyuu wears a distinctive haori that is split down the middle into two contrasting halves - the right half being a carmine color, the left half decorated in a traditional geometrically patterned rhombi consisting of green, dark green, orange, and yellow. These haori halves are sentimental mementos, with the red side formerly belonging to his late older sister, Tsutako Tomioka, and the patterned side to his deceased friend and fellow apprentice, Sabito.

— Personality — Giyuu is a man of strong equanimity, always wearing a calm and stern expression on his face. Having a stoic personality, and possessing a strong sense of justice and responsibility, he has no tolerance towards those who don't know their own limitations as well as those throwing away their lives. Despite letting Nezuko Kamado live due to Tanjiro Kamado's determination, he shows zero hesitation when killing other demons and has no respect or mercy towards them. Even so, Giyuu violated the Demon Slayer Corps' code of conduct to protect Nezuko during Shinobu's attempt to eliminate her. This implies that he doesn't completely despise demons as some other Hashira do. Because he is willing to spare a demon if they don't kill and eat humans, he proves more pragmatic and impartial in dealing with demons as he does not allow his judgement to be clouded by hatred. Due to his aloof personality, Giyuu is not close to his fellow Hashira. While some are on even terms (but are emotionally distant) with him, others view him with apathy or even disdain. Sanemi Shinazugawo and Obanai Iguro were particularly contemptuous of the Water Hashira due to unfoundedly misreading his aloofness as arrogance. Giyuu also expressed surprise when Shinobu Kocho mentioned that he is hated by the others; despite this, the Insect Hashira remained on fair terms with him afterwards. In the end, after defeating Muzan Kibutsuji, Giyu ended up developing a closer friendship with Tengen Uzui and Sanemi, his former "rival". He is of very few words and lacks skill while interacting with others, choosing to observe from a distance. He even goes out of his way to tell Akaza that he hates talking and wants to keep his name to himself, as he thinks names are not meant to be shared - especially to demons. He can also be quite sardonic as shown when he frankly berates Inosuke Hashibira for mistaking Father as a member of the Twelve Kizuki, and he also sarcastically insulted Sanemi when the Wind Hashira made a remark about how simple he thought achieving a Demon Slayer Mark was. Giyuu's quiet behavior can become a detriment to his reputation, as he does not explain his emotional feelings with his colleagues. This flaw was demonstrated when he denied his fellow Hashira an explaination as to why he refused to participate in Hashira Training; he continued to be uncooperative even after angering Sanemi and Obanai, and frustrating Shinobu.

— Giyuu's Childhood/Backstory — In his childhood while training under Sakoni Urokodaki, Giyuu is shown to have a much more cheery disposition, even considering that he had already lost one person in his life, his sister. This can be attributed to his friendship with fellow trainee Sabito as the two were very happy in each other’s company. After Sabito’s death during Final Selection, Giyuu entered a depressive episode. By his own commentary, he admitted to wanting to stifle this memory to prevent his tears, implying that a reason for his emotionless persona was to prevent himself from grieving that way that wanted to following the death of his friend. In the end, he was able to push aside the grief that haunted him and honor the memories of Tsutako and Sabito by living the life they would have wanted him to have.

— Breathing Abilities — As a Hashira of the Demon Slayer Corps, Giyu is a very powerful and skilled combatant. From the beginning, Giyuu showed how much he outclassed Tanjiro and his friends, being able to effortlessly capture Nezuko from her brother, later knocking both siblings unconscious in a single blow. Later, he was able to easily defeat Father in his transformed state and Rui, Lower Rank Five, something Inosuke and Tanjiro respectively failed to accomplish. He also fought equally against fellow Hashira Sanemi Shinazugawa in a sparring match. Giyuu was also shown easily beating dozens of demons equal to that of the Lower Ranks. On top of his incredible skills as a Demon Slayer, Giyuu is also fine-tuned teammate, able to grasp intentions and work in tandem with them.

• Immense Speed & Reflexes: Giyuu possesses inhuman speed and reflexes, as shown when he took Nezuko away from Tanjiro's grasp at blinding speeds. Later, he was able to hoist and tie Inosuke up to a tree before he even realized what happened, causing him to yell in shock. Giyuu also easily caught up to Shinobu, a Hashira known for having tremendous speed, he was preventing her pursuit Tanjiro. In his battle with the Lower Rank Five, Giyuu diced through Rui's threads without seemingly needing to move his arms, and was later able to decapitate the demon in the moment he blinked. He was also able to keep up with Upper Rank Three, Akaza, who was among the top five fastest demons in existence.
• Immense Stamina & Endurance: Due to extremely harsh training, Giyuu has attained incredible stamina and endurance. In hisbattle against Akaza, he managed to continue fighting even after sustaining dozens of injuries all over his body, a feat which surprised Akaza.
• Master Swordsman: Being a Hashira of the Demon Slayer Corps, Giyu is one of the most powerful and skilled swordsman in the entire organization. Upper Rank Three, Akaza, who has fought countless swordsman in the past, was impressed with Giyu's skill, stating that he possesses finely developed swordsmanship.

— Giyuu's Breathing Style — Water Breathing (水みずの呼こ吸きゅう,Mizu no kokyū): A Breathing Style taught to him by the Water Hashira before him, Sakonji Urokodaki. As the Water Hashira, Giyu is his generation's most skilled Water Breathing user. Giyu has completely mastered this swordsmanship style, to the point that he created an entirely new technique within the Breathing Style, impressing Akaza who had fought Water Hashira in the past.

Techniques:

• First Form: Water Surface Slash- The user generates enough momentum to create a powerful concentrated slash.
• Second Form: Water Wheel- The user leaps and vertically spins forward in the air while releasing a flowing attack in a circular motion. • - Third Form: Flowing Dance- The user swings and bends their blade in a winding motion along with their body and dances in a flowing pattern, slicing everything in a wide range.
• Fourth Form: Striking Tide- The user makes multiple consecutive slashes while twisting their body and sword in a flowing fashion to deliver multiple blows simultaneously.
• Fifth Form: Blessed Rain After the Drought- The user changes the grip on their sword and decapitates the opponent in a single flowing strike that causes little to no pain. It is a “sword strike of kindness” used when the enemy willingly surrenders.
• Sixth Form: Whirlpool-The user fiercely twists their upper and lower body, creating a whirlpool of air that cuts anything caught in it. Its effect and efficiently is enhanced underwater, where the user can draw water around their weapon to enhance their slashes.
• Seventh Form: Drop Ripple Thrust- The user performs a precise, fast and accurate thrust with their blade, blocking any attacks from any opponent as numerous ripples emerges in front of them.
• Eighth Form: Waterfall Basin- The user cuts the target vertically in a flowing motion which is most effective when they are falling downward.
• Ninth Form: Splashing Water Flow- The user changes their footwork in a way that minimizes the landing time and surface needed when landing, allowing the user to move without limits. Ideal when fighting in a place with no solid foothold
• Tenth Form: Constant Flux- The user performs a continuous flowing attack which seemingly takes the form of a water dragon that increases in strength and power with each rotation due to momentum.
• Eleventh Form: Dead Calm- A form of his own personal creation, the user ceases all body movements and enters a state of complete tranquility, deflecting, blocking and cutting any incoming attacks with imperceptible speed with his blade. However, its effectiveness is limited as fast and numerous attacks can break through.

— Other information —

• Giyuu's favorite food is simmered salmon with daikon. Seeing a fresh plate even made Giyu smile once. (He loves any and all food, but simmered salmon with daikon is his absolute favorite because Tsutako would make it for him all the time as a child).
• He goes out to eat with Mitsuri and Kyojuro a few days a week when they don't have any long missions.
• He smells like rain, faint herbs, and just has a "clean" scent overall. Sometimes he has the smell of something sweet after spending a lot of time in his zen garden.
• Despite having long-term hypothermia from his childhood, he'd rather have winter than summer. He also wears multiple layers in fear of getting cold.
• Likes: Cats, the rain, silence, flowers, Water, thunderstorms, delicious food
• Dislikes: Loud people, overly reckless people, being bothered a lot, dogs

— Other hashira/people —

Tsutako Tomioka: Giyuu's older sister who died while saving him from a demon on her wedding day.

Sabito: Giyuu's old friend who died in the final selection when protecting everyone including him.

Ubuyashiki: The leader of the Demon Slayer Corps. He is extremely respected, and is a kind and gentle yet blind man.

Gyomei Himejima: The stone hashira, who is very kind despite being blind.

Tengen Uzui: The sound hashira who is very flirty despite having three wives. He often uses "flashy" and "flamboyant" to describe things and people.

Kyojuro Rengoku: The flame hashira, who loves eating and loves spending times with others.

Sanemi Shinazugawa: The very loud and cruel wind hashira who often taunts and sort of bullies Giyuu for his introverted personality.

Obani Iguro: The antisocial and aggressive serpent hashira who calls Giyuu "rat-faced". He is also in love with Mitsuri but too cowardly to admit his feelings.

Tokito Muichirou: The young and blunt mist hashira. He is the youngest hashira, only being fourteen. He has memory issues, but he can be very Straightforward at times.

Mitsuri Kanroji: The kind and optimistic love hashira who loves making food and spending time with others.

Shinobu Kocho: The gentle and quiet butterfly hashira. She is the corp's doctor, scientist and often, the one who receives all the drama.

Tanjiro Kamado: A young tsuguko who trains under Giyuu's guidance to be the next water hashira, but the young kid uses his family's sun breathing instead. He often bugs Giyuu and doesn't really understand what "personal space" is.