|“||Killing humans is... unforgivable.||”|
Tanjiro is a young man who is short for his age, with rather tanned skin and an athletic physique. He possesses ruffled burgundy hair that casts notably dark shadows on itself, combed back to expose his forehead, and wide, dark eyes with white pupils that appear dark pink around the lower section of their irises. Tanjiro also has a birthmark on the top left of his forehead, which originally looked somewhat like a graze until his fight with the Hand Demon during the Final Selection Arc, after which it appears more like a large, dark red scar. It is noted that his hands are visibly tougher than someone his age's should be as a result of his rigorous training under Sakonji Urokodaki.
Tanjiro wears a checkered dark turquoise and black patterned haori over the standard Demon Hunter uniform, which consists of a dark brown gakuran jacket, a white belt around his waist and baggy pants that extend into tabi socks, as well as zōri and bands of white cloth wrapped around his calves. He also wears a pair of hanafuda earrings, decorated by a red sun symbol, and carries a large wooden box on his back, where his sister sleeps during the day.
Tanjiro is kind by nature and has been described by others as having very gentle eyes. He has a great deal of determination and will not give up once he has a goal to achieve; the best example of this being his relentless quest to find a cure for Nezuko. Even though he is relatively strong on his own, Tanjiro isn't opposed to asking others for help when he needs it. He is very protective of his friends and even more so of his younger sister. However, despite his kind and understanding nature, Tanjiro does have a limit to his tolerance and has a distaste for rudeness, as he easily becomes annoyed by Zenitsu Agatsuma's constant whining, and angered by Inosuke Hashibira's barbaric actions.
Tanjiro's most notable attribute is his ability to empathize with anyone, even demons, which often made him hesitate before delivering the final blow. This moment of hesitation had a downside, nevertheless, as it has allowed some Demons to take advantage of Tanjiro's understanding nature to recover and continue the fight, albeit rarely. However, during the years of Tanjiro's service as he begins to become more experienced, he becomes more calculating and strict in his decision. His courage to protect the weak committed him to face his enemy with respect and dignity whether good or evil Demons.
Abilities and Powers
Enhanced Sense of Smell: Tanjiro has had a heightened sense of smell even before he underwent sword training. It is strong enough for him to smell the 'line of interval' --the slight pause in an enemy's movement which allows him an opening in which to strike-- and distinguish between species, as well as their approximate position.
After training this skill during his time as a Demon Hunter, Tanjiro has acquired the ability to smell emotions as well as track objects, humans and demons over long distances.
Fighting ability: This trait of Tanjiro's was pointed out by Giyu Tomioka during their first encounter, in which Tanjiro skilfully laid out a plan to attack Giyu by surprise by charging towards him, not showing the Demon Hunter that he was unarmed, and bring down Giyu with an axe he had thrown in the air beforehand. The attack failed, but Giyu was still very impressed by Tanjiro's plan, especially considering he was a rookie at the time.
Enhanced strength: After his training at Sagiri Mountain, Tanjiro has gained immense strength and speed and has demonstrated a great use of it, as seen when he jumped twice his height over the Hand Demon, who killed Sakonji's disciples, during Final Selection. His forehead is noted to be unusually sturdy as well, although this ultimately only serves to become one of the running gags in the series.
Breath of Water (
- First Style: Water Surface Slice (
壱ノ 型 水 面 斬り Ichi no kata: Minamo giri?): A single concentrated slash.
- Second Style: Water Wheel (
弐ノ 型 水 車Ni no kata: Mizu guruma?): Tanjiro jumps and spins his body while slashing.
- Third Style: Dance of the Rapid Current (
参ノ 型 流 流 舞い San no kata: Ryūryū mai?): Tanjiro swings his blade at his opponent in a way that mimics the movement of waves on the surface of water.
- Fourth Style: Striking Tide (
肆ノ 型 打ち 潮Shi no kata: Uchishio?): Tanjiro makes multiple consecutive slashes, while twisting his body in a flowing fashion similar to a harsh tide.
- Fifth Style: The Merciful Rain of a Dry Day/Blessed Rain After the Drought (
伍ノ 型 干 天の 慈 雨Go no kata: Kanten no jiu?): A "sword strike of kindness" that beheads the target with little to no pain. Tanjiro uses this when the enemy surrenders him/herself willingly.
- Sixth Style: Twisting Whirpool (
陸ノ 型ねじれ 渦Roku no kata: Nejire uzu?): Tanjiro fiercely twists his upper and lower body, which creates a whirlpool that cuts anything caught in it.
- Seventh Style: Piercing Rain Drop (
漆ノ 型 雫 波 紋 突き Shichi no kata: Shizuku hamon tsuki?): A fast and accurate stab. The fastest Breath of Water technique.
- Eight Style: Waterfall Jar (
捌ノ 型 滝 壷Hachi no kata: Takitsubo?): Tanjiro cuts the target vertically.
- Ninth Style: Water Splash (
玖ノ 型 水 流 飛沫Ku no kata: Suiryū shibuki?): This move minimizes the landing time and surface needed when landing, allowing Tanjiro to move without limits. It is ideal when fighting in a place with no solid foothold.
- Ninth Style: Water Splash - Chaos (
玖ノ 型 水 流 飛沫・ 乱Ku no kata: Suiryū shibuki - ran?)
- Ninth Style: Water Splash - Chaos (
- Tenth Style: The Dragon of Change (
拾ノ 型 生 生 流 転Jū no kata: Seisei ruten?): A constant attack that increases in power with each rotation, creating a strong slash.
The Mark of the Sun state: Tanjiro entered this form for the first time in chapter 81 and later at chapter 152. This state increases his strength, speed and reaction time drastically, as he becomes easily capable of dodging and countering Daki's attacks, an Upper Moon Six, without Daki being able to injure him at all. He is able to easily dodge Akaza's end-style chaotic blue metal afterglow, which Giyu's Eleven Style has failed to counter and his speed becomes fast enough to cut off Akaza's, Head Upper Moon Three, without the latter being able to react. The only drawback is that Tanjiro can only enter this state on rare occasions, and can only use it for a very short period of time since it causes exhaustion to his body, as shown in his battle against Akaza and Daki.
- Waltz (
円 舞Enbu?): A single concentrated slash.
- Blue Heaven (
碧 羅の 天Heki-ra no ten?): A similar attack to "Water Wheel" in which Tanjiro spins his body to create a 360-degree slash.
- Scorching Crimson Mirror (
烈 日 紅 鏡Retsujitsu kōkyō?): Tanjiro unleashes two horizontal slashes that defends him from attacks from the front or the side.
- Flame Waltz (
炎 舞Enbu?): A two-combo strike which starts with a vertical slash and then a horizontal one right after.
- Parhelion Rainbow (
幻 日 虹Gen'nichi kō?): Tanjiro uses this technique to evade techniques using high-speed twists and rotations. It works most effectively on enemies with good vision, as they will attack an afterimage of him and not his actual body.
- Fire Chariot (
火 車Kasha?): Tanjiro uses this technique in quick succession with Parhelion Rainbow and attacks the enemy while they are distracted.
- Burning Sun (
灼 骨 炎 陽Shyakkotsu en'yō?): A circular slash that defends from imminent frontal attacks.
- Shining Sun Stab (
陽 華 突Yōkatotsu?): A single thrust attack with the sharp blade.
- Solar Halo Dragon Dance (
日 暈の 龍 頭 舞い Nichiun no Ryū Kaburimai?): A combination attack utilizing Nezuko's Blood Burst, Tanjiro's sword adopts a red color and is coated in flames. While in this state, he circles the enemy in a pattern resembling a flaming dragon and slashes them multiple times, ultimately beheading them.
- Waltz Flash (
円 舞 一 閃Enbu Issen?): Tanjiro utilizes Zenitsu Agatsuma's Thunderclap Flash and combines it with his Flame Waltz by pumping air through his entire body, focusing it on the legs, and releasing it all, while ending with a flaming slash. The technique was capable of out-speeding Genya Shinazugawa and Nezuko, as well as the fleeing Hantengu, although it is still slower than Zenitsu's Thunderclap Flash.
- Soaring Flame Haze (
飛 輪 陽 炎Hirin Kagerō?)
- The Setting Sun (
斜 陽 転 身Shayō Tenshin?)
Ability to See-Through: Like his father, he finally gained the ability to foresee the opponent's attack while showing no battle spirit and sense of blood-lust; gaining immunity from anyone who can sense these.
- Kamado, without the second kanji (竈, かまど) is a traditional Japanese wood or charcoal-fueled cook stove/furnace.
- Do, the second kanji of his family name, (門, ど) means door.
- Tan (炭, たん) means charcoal.
- Ji (治, じ) can mean 'to heal'.
- Rō (郎, ろう) is a common Japanese name suffix for boys. It also means male.
- Tanjiro was ranked in 1st place as of the first character popularity poll with 6,742 votes.
(To Giyu Tomioka) "To dispel the regrets of those killed, to stop anymore victims from appearing, I will relentlessly wield my blade against the Demons, and that's a fact. But I will not trample on the pains of being a Demon. Nor on those who regret their own actions. Because demons were humans. Because they were humans like me."  (To Sanemi Shinazugawa) "If you can't differentiate the good Demons from the bad ones, you should quit being a Pillar!!"