Though Tanjiro succeeds in making use of Water Breathing throughout the early parts of his adventure, he eventually discovers that he's better suited for Sun Breathing instead.
Second Form: Improved, Lateral Water Wheel
Instead of a vertical slash, Tanjiro uses a horizontal one instead to attack an enemy from a totally different angle. It's indicative of how talented Tanjiro really is and displays his latent potential.
Over the course of the series, Tanijiro unlocks multiple breathing styles, but only two have been shown in the anime so far. This list contains all the styles that Tanjiro has performed in the anime and the different techniques classed under them.
During the Entertainment District Arc, when Tanjiro was completely exhausted, he combined his Sun Breathing with Water Breathing to save Hinatsuru from the grasp of the Upper Six. This also made him the only known Demon Slayer who is capable of combining two Breathing Styles.
Thirteenth Form of Sun Breathing in Demon Slayer
It involves a combination of all existing Sun breathing techniques — but performed in a consecutive manner. This technique's primary purpose is to slash all the twelve vital organs of a demon. Each form targets a specific organ. Tanjiro only used it once in the manga.
This mastery allowed Zenitsu to form a Seventh Form of Thunder Breathing that is unique only to him: Honoikazuchi no Kami. While this move might seem similar to Thunder Breathing's First Form, the speed and power of this technique are on a whole new level.
Tanjiro isn't Faster Than Zenitsu, not at all. He is Strong but Slow. So, Zenitsu Will Probably Chop Him Down to bits before tanjiro even pulls out his sword properly. There ya go!
8 Tanjiro Is The Only Living User
On the other hand, Sun Breathing can, presently, only be performed by Tanjiro Kamado. Though its techniques can be taught to others provided they have the guidance of a Kamado, there are no other known users who are currently alive.
Demon Slayer's season 3's latest episode has left fans on edge with Tanjiro's discovery of Yoriichi Tsugikuni's Type Zero sword.
Fourth Form: Striking Tide
After taking a moment to focus on his breathing technique, Tanjiro deftly rotates his body in a full circle and unleashes two strong horizontal attacks. The form is meant to resemble the flow of a harsh tide.
In the Demon Slayer Corps, the Hashira is a group of the strongest and most reputable swordsmen who have defeated members of the Twelve Kizuki. Yet, for some reason, Tanjiro Kamado, the series' protagonist, never becomes a Hashira.
What yogis refer to as Moon Breath or Chandra Bhedana involves breathing in through your left nostril only. The left side of your body is thought to be associated with the nervous system, and so Chandra Bhedana has been traditionally used to calm it down and promote sleep.
Moon Breathing is solely used by Michikatsu Tsugikuni, one of the first Demon Slayers who utilized Total Concentration Breathing, and is a Breathing Style which he continued using and perfecting after becoming a demon.
The Thirteenth Form of the Sun Breathing Style is unique in the sense that it doesn't really have a name of its own. Rather, it's a combination of all the twelve forms present in this style, used in succession to maximize their power. This move was devised by Tanjiro solely to defeat Muzan.
The warrior Muzan feared was a swordsman named Yoriichi Tsugikuni. Yoriichi was the only slayer before Tanjiro who came close to killing Muzan, and the flashback of their fight occurred in Chapter 187.
Tanjiro's birthday is on July 14. In the Entertainment District arc of the series, Tanjiro was 15 years old and turned 16 following his four-month training at the butterfly mansion after his fight with Upper Moon Six: Daki and Gyutaro.
According to the creator of Demon Slayer, Koyoharu Gotouge, Nezuko's biological age is 12. This means that while she has been alive for 14 years, her body has only aged to the point of a 12-year-old.
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.
After Muzan was defeated, all the demons he created also perished immediately, so there was no point of a Demon Slayer corps anymore. As a result, Zenitsu did not get to become a Hashira even after becoming strong enough to bie one. Demon Slayer is one of the most popular anime series going on right now.