While she might not be as powerful as Muzan himself, her overall strength makes her easily comparable to an Upper rank demon.
I think Nezuko is in between upper moon level and lower moon level. She was able to fight against a full powered daki and was beating her for a while. Nezukos regeneration speed surpassed Daki as well so she has the regenerative powers of an upper moon.
Nezuko's most significant trait, however, is her immense growth, which is likely due to a combination of the amount of blood she received from Muzan and her willpower. To conclude, Nezuko is a formidable powerhouse within the anime and is probably one of the strongest main characters in the series.
Kokushibo (黑死牟) is the secondary antagonist of the manga/anime series Demon Slayer: Kimetsu no Yaiba. He is Upper Rank One of the Twelve Kizuki, and the archenemy of his younger twin brother, Yoriichi Tsugikuni.
5 Nezuko's Demon Form Has A Berserk State
We see horns come out of her forehead and vine markings wrapped around her body. She is at her most powerful in this form but her demon side starts to take over and she would need human blood for nourishment. The only person who can calm her down in this state is Tanjiro.
Nezuko, at that stage, was able to go toe-to-toe with her, and now that she had transformed, she could easily defeat Susamaru. Her Blood Demon Art only affects demons and not humans. Therefore, she could use that to stop Susamaru from regenerating. In theory, she could use this to defeat any demon.
Eventually Zenitsu and Nezuko would marry and start a family as evidenced by their descendants.
Tanjiro's Current Demon Slayer Rank Is Kanoe
Murata, the Demon Slayer, who was almost digested on Mount Nagumo, is also a Kanoe.
12 Hairo. Kyojuro Rengoku was an admirable Hashira who died a hero's death when he sacrificed his own life to prevent Muzan from killing the three aspiring Demon Slayers who were traveling with him.
The divine nature of sun breathing: Tanjiro's link to Yoriichi. The flashback also reveals that Yoriichi had a twin brother named Michikatsu Tsugikuni, who became a Demon Slayer but later turned into a demon and became Upper Moon One, Kokushibo.
Abnormal Demon Physiology: As the "chosen demon", Nezuko has several unique demonic traits that set her apart from all other demons. Most notably, Nezuko can continuously restore her power without consuming any human blood like any other demon would need to do.
Nezuko, also a part of our strongest characters in the Demon Slayer list, is one of the most powerful female characters in the anime. Just by being a demon, she is more powerful than all the human characters in the series. And she is also the only demon who can withstand the sun, making her practically unkillable.
Muzan, the King of Demons, is the strongest and also the primal demon in the world of Demon Slayer. Consuming his blood is enough to turn you into a powerful demon. He can control all the demons in existence, with only people with strong willpower like Nezuko being an exception.
In conclusion, Nezuko cannot beat Akaza in Demon Slayer. In terms of power, physical abilities, regeneration rate and overall combat ability, Akaza is far superior compared to Nezuko.
With this in mind, if Nezuko had also been murdered by Muzan, Tanjiro would have no reason to be empathetic toward demons. Her transformation gave him a perspective of both demons and humans, but without Nezuko becoming a demon he would have no reason to take their feelings into account.
"Humans are to be protected and saved... I will never hurt them." - Nezuko Kamado.
Zenitsu ranked 2nd place in the first popularity poll with 4,299 votes. Zenitsu ranked 1st place in the second popularity poll with 17,451 votes.
Shinobu Kocho Is the Weakest Hashira
The Insect Hashira, Shinobu's petite frame prevents her from being physically able to decapitate any demon, be it an Upper-Rank or the weakest demon in Japan.
With his improved combat skills and newly learned Water Breathing techniques, Tanjiro successfully decapitates two demons.
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.
In his own franchise, Tanjiro is outclassed by most of the nine Hashira as of the end of season 1, including Giyu Tomioka. It's easy to compare Tanjiro's strength to Giyu's — since they are both demon slayers — and they even use the same element: water.
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.
Nezuko marries Zenitsu Agatsuma in the Demon Slayer series.
ZenNezu is the het ship between Zenitsu Agatsuma and Nezuko Kamado from the Demon Slayer fandom.