Zenitsu Agatsuma only uses one move (in anime up till now) , I.E. Thunderclap and Flash, because he hasn't learned the other Thunder Breathing Forms. He never wanted to learn any breathing techniques or fighting techniques nor he wanted to join the Demon Slayer Corps.
because zenitsu mastered it to the utmost limit.)
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.
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.
Thunder Breathing has 6 standard forms in total, with the first form said to be the foundation for all the other forms. 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.
1/7 Seventh Form: Honoikazuchi No Kami
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.
Zenitsu creates his own form called Seventh Form: Honoikazuchi Nokami. Through this form, he is able to conjure a creature akin to a dragon that breathes thunder and fire. When combined with God Speed, his power and strength increase, giving him the ability to defeat demons like Kaiju, from the Upper Moon Six.
When facing Kaigaku during the Infinity Castle arc, Zenitsu debuts his brand new exclusive Seventh Form to Thunder Breathing. With this, Zenitsu finally has more than one tool in his arsenal and has overcome his own personal doubts and fears.
After mastering his Thunder Breathing, Zenitsu would eventually become capable of awakening his Demon Slayer Mark. As this mark would enhance his strength and speed, he can overwhelm Gyomei to a certain extent, but he still won't manage to defeat him.
Zenitsu is one of the main characters, and he does stop being a coward in Chapter 143–146, which is hte final arc of the series.
While unconscious, Zenitsu is a force to be reckoned with, but his actual power is discovered when he is awake. While awake, Zenitsu was able to match the upper rank six, Kaigaku. He was also able to keep up with the Demon King, though he was in a weakened state during this battle.
To sum it up, it is possible for Zenitsu to fight without fainting and it has been shown clearly in the manga. While he only perfected the first form, he trained hard enough to create a new form that didn't exist before.
Tanjiro Is Strong, and Stronger than Zenitsu as he uses Sun Breathing.
Why Zenitsu could not become a Hashira in Demon Slayer. Fans have wondered whether Zenitsu ever got to realize his dream of becoming a Hashira at all. Unfortunately, the answer to this question would be, no, he did not. Zenitsu, along with Tanjiro and Inosuke got way stronger than average corps members with training.
As a result of these events, fans have wondered whether Zenitsu has a split personality disorder. The answer to this seems to be no. The reason is actually pretty apparent here. The gold-haired character, even while being cowardly and unwilling, went through rigorous training to master his Breathing technique.
Most Demon Slayers get crows, but the symbology of the sparrow makes Chuntarothe the perfect fit for Zenitsu. While all other Demon Slayers are gifted a crow after final selection, Zenitsu is assigned a sparrow instead.
Yoriichi was born with the Demon Slayer mark and prowess in swordsmanship. His powers were beyond comparison as he defeated Muzan once and had him on the verge of death until he managed to escape.
It was after Daki unleashed an attack and harmed multiple people, Tanjiro was extremely angry at this that his eyes were turning blood-shot red.
His most useful technique is Honoikazuchi no Kami — a technique created by Zenitsu himself that is incredibly powerful and requires so much speed that Zenitsu's haori is completely ripped to shreds during its execution.
Surprisingly, Zenitsu is the oldest compared to Tanjiro, Nezuko, and Inosuke. What's even more surprising is that even at 16 years old, his cowardly nature makes him seem like the youngest out of the four.
Zenitsu's descendants live in their own large mansion while descendants of his best friend Tanjiro Kamado live in an apartment in the present era. This indicates that somewhere along the line, Agatsuma family became rich.
After the deaths of Daki and Gyutaro, Kaigaku was promoted to become Upper Moon Six of the Twelve Demon Moons due to his power and confronted Zenitsu as a rematch he always desired.
History. Jigoro was the instructor of Zenitsu and Kaigaku as the former Thunder Hashira. Kaigaku managed to master all of the Thunder Breathing Forms except for the first Form, meanwhile Zenitsu had only managed to master the first Form and none of the others due to his inexperience.
Over a century ago, Doma held the position of Upper Rank Six ( 上 じょう 弦 げん の 陸 ろく , Jōgen no Roku?), and during that tenure, he turned Gyutaro and Daki into demons and introduced them into the Twelve Kizuki.