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.
There are six forms, but Zenitsu could only learn the first form said to be the basis for the others yet he honed it to where he could fight against several strong demons. He later created a seventh form and defeated his former senior who had become the Upper Rank Six of the Twelve Kizuki.
Thunder Clap and Flash—Godspeed is the most powerful of Zenitsu's derivations of the Thunder Breathing first-form technique.
However, Zenitsu Agatsuma developed a Seventh Form in order to stand on equal ground with Kaigaku, his former senior disciple under Jigoro who had become the Upper Rank Six of the Twelve Kizuki.
Twelfth Form: Flame Dance Form of Sun Breathing
While its name is majestic, the Flame Dance form of Sun Breathing is simple. It involves launching a strong vertical attack followed by a quick horizontal slash.
Eleventh Form: Dead Calm ( 拾 じゅう 壱 いち ノ 型 かた 凪 なぎ , Jū Ichi no kata: Nagi?) - The personal creation of the current Water Hashira, Giyu Tomioka. The user ceases all body movements and enters a state of complete tranquility, deflecting, blocking and cutting any incoming attacks with imperceptible speed with their blade.
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.
So in a nutshell, Zenitsu wasn't able to master the other five forms, but later in the Infinity Castle Arc, during the battle with Kaigaku, Upper-Rank Six Demon, he created a Seventh Form: Flaming Thunder God.
His Blood Demon Art is “Electrokinesis,” which uses various forms of Thunder breathing. During their fight, Zenitsu was at a major disadvantage against Kaigaku until he used the seventh form called “Honoikazuchi no Kami,” literally meaning “Flaming Thunder God.”
Zenitsu is clearly on the same level as Hashira. If we compare him to Shinobu, his speed is far better, while she lacks quite a lot in raw power. There is a good chance that he could beat Shinobu if the two decide to fight.
Demon Slayers are known for their strength and bravery in battle, but not Zenitsu. Despite his cowardice, he's one of the strongest in the series.
But, comparing the two characters in their best forms, Zenitsu might be just a tad bit faster owing to his Godspeed move.
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!
Nezuko Kamado
Zenitsu also protects Nezuko multiple times when she is in danger, evident during Zenitsu's first meeting with Inosuke Hashibira and the battle against Enmu in the train. Eventually Zenitsu and Nezuko would marry and start a family as evidenced by their descendants.
Unfortunately, he retired at the age of 35, when he lost his right leg in a fight with a demon. Since then, he devoted his time to teaching the next generation of demon slayers, most notably, Zenitsu Agatsuma, who lovingly called him "grandpa".
Despite his extremely bright and almost jarring appearance, Zenitsu is shown to be a coward who joins the Demon Slayer Corps because of certain personal reasons. The former Thunder Hashira is the one who becomes his master and teaches him the Thunder Breathing techniques.
172.1 Km/h Whenever he performs his thunderclap And flash move.
Sun Breathing has the second highest number of known techniques of all the breathing styles. It has twelve forms that can all be combined into an extremely powerful thirteenth form. It is second only to Moon Breathing which has sixteen techniques, employed by the Upper Rank One demon Kokushibo.
8 Shinobu Kocho, The Insect Hashira
That being said, she's arguably the weakest Hashira when it comes to pure strength.
1. Gyomei Himejima. Gyomei Himejima, the Stone Hashira, is the strongest Hashira in the Demon Slayer corps in terms of strength and swordsmanship. He is the only person who uses spiked flails and an axe instead of standard swords to kill demons.
Zenitsu trained under the former Thunder Hashira, Jigoro Kuwajima. Under Jigoro's strict training, Zenitsu only mastered the first form of Thunder Breathing. Although he often tried to run away from Jigoro, he highly respected his mentor and viewed him as a parental figure.
Seventh Form: Drop Ripple Thrust
The utility of the seventh Water Breathing form is not to be underrated. As Tanjiro himself puts it, the seventh form is the fastest thrusting technique of all the Water Breathing forms. This makes it ideal for quickly thrusting the Nichirin Blade forward as if fencing.
6 Sixth Form: Whirlpool
Given the name of Water Breathing's sixth form, its function should be pretty obvious. The user of this move twists their body around and creates a whirlpool that would lacerate anyone within range.
17 Water Breathing: Fourth Form – Striking Tide
While on the mountain, Striking Tide was the first form Tanjiro used. It uses flowing movements, allowing its user to perform multiple consecutive strikes to overpower their opponents.