Zenitsu is a master swordsman who wields a yellow Nichirin blade, a katana style blade made of scarlet ore.
Like his fellow demon slayers, Zenitsu has a sword – specifically, a katana called a “Nichirin Blade” – that is forged from an ore that constantly absorbs sunlight which handily happens to be a major weakness of the demons they battle.
Zenitsu Uses a Special Katana Called a Nichirin Blade
These Nichirin swords are made from Scarlet Crimson Iron Sand and Scarlet Ore which absorbs sunlight, making it possible to kill demons.
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.
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.
Tanjiro Is Strong, and Stronger than Zenitsu as he uses Sun Breathing.
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.
At this point Zenitsu has manifested his speed and power, and he was also able to keep up with the Demon King, Muzan, even when weakened. It's possible to say that his power easily matched the strength of a Hashira.
Black is an extremely rare color for Nichirin blades and indicates that Tanjiro's compatibility might not be with the water breathing style or even the Hinokami Kagura.
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. In fact, he became one of the very few to even invent a new form of Thunder Breathing. However, his dream of becoming a Hashira was never realized.
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.
Superhuman Hearing: Zenitsu has always had enhanced hearing, being able to hear what others can't. He is able to hear a faint difference that is normally indetectable to humans in the sound of a moving human and a moving demon. His hearing gives him extra awareness for danger.
Thunder Clap and Flash—Godspeed is the most powerful of Zenitsu's derivations of the Thunder Breathing first-form technique.
Thunder Breathing is one such technique that Zenitsu has used to great effect in the series. Of course, Zenitsu is only the master of the first form, but it goes without saying that the other techniques of Thunder Breathing will also be awe-inspiring to witness in Demon Slayer.
slow ?! , Deku was able to dodge and hit in a split second. And yet he is clearly faster than Zenitsu .
Tanjiro would win, because Deku have no way of killing Tanjiro. Deku may be stronger but in the end Tanjiro would win by stamina or landing a hit at Deku, which have poison that would kill Deku.
3 Can't Beat: Nezuko
Her strength and speed when she's embracing her new demon abilities are pretty impressive, and she'd likely give Zenitsu a run for his money if they were to fight.
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.
3) Zenitsu Agatsuma
If he could, Rengoku would win simply because Zenitsu cannot perform Godspeed more than twice. Since Zenitsu only knows the first form, Rengoku would know what to expect and accordingly counter his moves, taking him down in the end.
The adventure and life of a child of a demon and a human. Inosuke Hashibira, a half-demon among demon slayers.
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.
According to Zenitsu, Jigoro never gave up on him to make him stronger and a better swordsman. He took care of Zenitsu like he was his grandson, he saved Zenitsu many times and he has shown unlimited patience at training the boy despite his cowardless and laziness.
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.