12. Shinjuro Rengoku. As the name reveals, Shinjuro is the former Flame Hashira and the father of Kyojuro Rengoku. His status in itself is enough as a testament to his power.
13 Jigoro Kuwajima, The (Former) Thunder Hashira
After all, no one can really say that Jigoro Kuwajima is an outright weak person. The fact that he was once the Thunder Hashira clearly indicates he used to possess vast power.
Gyomei Himejima is the strongest Hashira in Demon Slayer. This fact has been established in the manga as Tanjiro, Inosuke and Zenitsu all agree that he is the strongest member of the Demon Slayer Corps.
Realizing the danger to himself, Muzan remotely detonated Nakime's head through his influence, killing Nakime, although her body still remained active for sufficiently long time to bring the fortress into the surface. This attempt at self preservation effectively eradicated the Twelve Kizuki.
As for the "last ever Hashira"...that would be Shinazugawa-san as well as Tomioka-san.
Following his demise at the hands of Akaza, Flame Hashira's position fell empty. The only person who could fill the position and carry on the family tradition was Kyojuro's younger brother, Senjuro Rengoku.
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.
Fortunately, Zenitsu was able to single handedly beat the Upper Moon 6. Not only did he defeat the demon, he also created a seventh form called the Flaming Thunder God. These are the demons who have been given the title of Upper Moon 6 in Demon Slayer.
Upper-Rank Two: Doma
Kanao Tsuyuri and Inosuke then teamed up to fight, but were no match for him until the 37 kilograms of Wisteria poison he'd inadvertently ingested by consuming Shinobu began to melt his body.
The last member, Upper Moon Four Nakime, ends up being killed by Muzan Kibutsuji himself to stop the Dimensional Infinity Fortress from being controlled by his enemies.
Shinobu Kocho Is the Weakest Hashira
At one point or another in the manga, all nine Hashira in Demon Slayer encountered an Upper-Rank. Of the three Hashira who were killed by Upper-Ranks -- Rengoku, Shinobu and Tokito -- Shinobu was the only one who was killed almost instantly when she encountered Doma, Upper-Rank Two.
Demon Slayer's Tengen Uzui is considered to be one of the weakest Hashira due to almost losing this fight, but the fact is that Tengen only looks weak when compared to the most overpowered Hashira.
Least Favorite: Obanai- he had so much potential, but he was barley used and most of that potential was wasted. The sad backstory wasn't able to redeem him for me, it felt kinda forced to make people like him.
1 Muzan Kibutsuji
The Demon King Muzan Kibutsuji has seven hearts and five brains, making him one of the most intelligent characters in the Demon Slayer anime series.
because the Japanese character for the word Hashira. is made up of 9 strokes.
Japanese VA. Kazuhirō Sasaki ( 佐 さ 佐 さ 樹 き 和 かず 洋 ひ 郎 ろう , Sasaki Kazuhirō?) is a Demon Slayer and the Darkness Hashira of the Demon Slayer Corps.
Akaza. Because of his desire to become stronger and Doma's strength allowing him to surpass himself to become Upper Two, Akaza harboured an intense hatred of Doma.
The impact of the punch, causes Akaza to remember his beloved teacher and the morals he was taught as a student. Having remembered all along he wanted someone to kill for the outcome of his life, Akaza decides to kill himself by directing his attack at his own body.
Unable to fight back, Doma realized he was tricked but it was too late. He was soon decapitated by the combined force of Kanao and Inosuke, avenging Shinobu and her family.
The demon slayers successfully defeated Muzan.
5 Hashiras who die in Demon Slayer, and how it happens.
Who is Jigoro Kuwajima? Jigoro was a former Hashira who practiced Thunder Breathing, which ended up giving him the title of "Roaring Hashira". Naturally, he was a very powerful demon slayer who successfully killed many demons.
Tanjiro decapitates Akaza with the Hinokami Kagura: Setting Sun Transformation. Akaza was bewildered, wondering how Tanjiro did not have any fighting spirit, comparing this feeling to fighting against a plant. He acknowledges that Tanjiro surpassed his speed.
Thankfully, he also taught Zenitsu, who is an absolute prodigy and could only achieve this greatness under the guidance of an intelligent and patient sensei.