Tanjiro is certainly strong in his own right, and he's strong enough to defeat many of the characters in the series, whether they be demon or Demon SlayerEach demon slayer is armed with a Nichirin Blade, a special sword forged from an ore that absorbs sunlight. Nichirin blades turn a specific color after its owner grips its handle for a while. Each color has a different meaning.https://www.cbr.com › demon-slayer-sword-color-meaning
To sum it up, Tanjiro exceeded everyone's expectations by far, as nobody would have thought that a kid who had a hard time swallowing the fact that demons exist could become a strong compelling opponent with a Breathing Technique that is the paramount of all the known Techniques.
Mitsuri Kanroji is another Hashira who Tanjiro could definitely beat in Demon Slayer. Mitsuri's main trick up her sleeve is her muscle composition, which makes her muscles eight times denser than that of a normal human's. In other words, she's incredibly strong and powerful, and tough with plenty of endurance as well.
1) Demon Tanjiro
It is important to note that Tanjiro also received every last drop of Muzan's blood, which was way more than what any other demon from the Upper Moon had. As a result, he became the strongest demon in Demon Slayer.
So looking at this information and seeing that when Tanjiro is in his Demon King form he has 3 DEMON SLAYER MARKS IDENTICAL TO YORIICHI'S you can tell HIS POWER HAS TRIPLED. So in the end DEMON KING TANJIRO IS A WHOLE LOT MORE POWERFUL THAN YORIICHI.
Given how talented Tanjiro is, it's likely he'd defeat Zenitsu, even if the latter could fall asleep and call on his powers. Tanjiro's demonstrated his ability to take down more powerful demons and adapt to training on more than one occasion, so it just makes sense.
5) Yoriichi
Case in point: he was the only one who could single-handedly take on Muzan and drive him to a corner. Yoriichi would be able to defeat every single Hashira on this list without breaking a sweat. Such was his reputation and skill in swordsmanship.
1/10 Tenth Form: Constant Flux/The Dragon of Change
The most powerful water move in Tanjiro's current skill set, this is a form that gets more and more powerful with each rotation that he puts in. It's number one on the list because it has, theoretically, no ceiling when it comes to its intensity.
In the very far chapters of the manga, before being killed by the Demon Slayers, Muzan passes on his feelings and powers to Tanjiro. After turning into a Demon, Tanjiro is able to develop resistance to sunlight, making him the second Demon after Nezuko to be able to do so.
Through his acrobatic skills, swordsmanship prowess and sense of smell, Tanjiro managed to successfully decapitate the demon. Tanjiro's extraordinary combat prowess and superhuman physical attributes allowing him to overpower Rui, a member of the Twelve Kizuki.
8/13 Shinobu Kocho, The Insect Hashira
That being said, she's arguably the weakest Hashira when it comes to pure strength.
As it turns out, Tanjiro has received a few promotions during his service. However, saying that Tanjiro has become a Kanoe doesn't mean much on its own. The Corps' ranks and functions are fairly straightforward.
Giyu Tomioka and Sanemi Shinazugawa attend as the final surviving members of the Hashira, and together they they get a confirmation that not only are the demons all eradicated, but that the Demon Slayer Corps will be disbanding.
10/10 Can Beat: Tanjiro
The fact that Giyu easily takes down Rui, a demon that nearly kills both Tanjiro and Nezuko, also proves that he's a more powerful demon slayer than Tanjiro — at least currently.
In the far chapters of the Demon Slayer manga, Tanjiro is actually turned into a demon by Muzan Kibutsuji. Muzan does this to continue his demon legacy and live in this world even after being dead. He chooses Tanjiro over everyone else as he considers him the perfect one to carry on his legacy.
Initially, Tanjiro's accuracy and strength were not up to the mark, which is why Muzan was able to avoid his attacks. However, Tanjiro accurately performed the thirteenth form and inflicted a ton of damage on the Demon King.
Tanjiro Is Strong, and Stronger than Zenitsu as he uses Sun Breathing.
1/15 Yoriichi Tsugikuni Nearly Defeated Muzan On His Own
Yoriichi is considered to be the strongest Demon Slayer to ever exist. He is so powerful that the battle doll crafted in his image needed multiple arms to accurately replicate his movements.
9/10 Can't Beat: Tanjiro
This likely has something to do with their fighting styles. While Inosuke fights purely on instinct, Tanjiro has a tendency to strategize — something that enables him to come out on top more often than not.
There are 14 different Breathing Styles Demon Slayer's can make use of, and most typically specialize in one during their time in the corps.
Tanjiro has used his signature headbutt against many demons, and they all felt some sort of pain from it. This just makes Tanjiro look even more overpowered, considering the fact that demons can break bones effortlessly.
Tanjiro's olfactory abilities are so advanced that he's able to use his nose to interpret his surroundings to a staggering degree. During his training with Sakonji, he demonstrates the ability to smell traps, and when he defeats the Hand Demon, he's able to actually smell its emotions.
Kokushibo is reserved, silent, and aloof, maintaining an aura of unnerving tranquility and mystery that compliments his position as Upper Rank One.
It was Yoriichi's sword, he found it inside Yoriichi Type Zero doll when he destroy the head. And then hotaru took the sword to fix it. Tanjiro also use Kyojuro's tsuba in this sword.
No, they are not related. Tanjiro, by PURE COINCIDENCE, heavily resembles Yoriichi Tsugikuni, the creator of Breath swordsmanship, the only other person to use Sun Breathing, and the only person Muzan ever feared.