The Hashira (柱 (はしら), Hashira?, lit. Demon Slayer Corps. As such, they are the organization's most elite and powerful warriors who each serve a pivotal role in their war against Muzan Kibutsuji and the Twelve Kizuki. The Hashira (all revealed) in Episode 23's opening. The Hashira are the nine overall most powerful members and combatants in the entirety of the Demon Slayer Corps, and often regarded as the most skilled swordsmen among all Demon Slayers, protecting them against more dangerous threats that cannot be handled by any other Demon Slayer. Therefore, their existence literally sustains the entire organization. The Hashira, in accordance with their great strength, are the highest ranking members in the organization, second only to the Corps leader, Kagaya Ubuyashiki, and later, Kiriya Ubuyashiki. The Hashira are all assigned a specific region that they are required to patrol, usually to gather information about the demons inhabiting the said area and to improve their swordsmanship. They are also deployed on missions only if members of lower ranks are unable to complete it. Each Hashira has a distinct and unique Breathing Style, some of which are even created by themselves. Swordsmen who can use the Flame Breathing and Water Breathing have become Hashira in every era, with no exceptions thus far. To be a member of the Hashira, a Demon Slayer must be among the strongest combatants in the entirety of the Demon Slayer Corps. The second and last method is being a Tsuguko of a Hashira, which requires immense talent in of itself, and only takes effect when said Hashira dies or retires.
Each of the Hashira oversees a different part of the training program.
The effort required to achieve either of these methods requires almost five years worth of training, though, the talented might take only two or so years to do so. However, there were two cases that were much faster than that; Muichiro Tokito and Gyomei Himejima, who managed to rise to the rank of Hashira just two months after becoming Demon Slayers. In some cases, an exceptionally talented Demon Slayer can become the designated successor to one of the Hashira, known as a Tsuguko. To become a Tsuguko, a Demon Slayer can either apply for the position and get accepted, or get scouted by one of the current Hashira. Hashira Training (柱 (はしら) (げい) (こ), Hashira Geiko?) is a special training session conducted by the Hashira and undertaken by numerous lower ranked Demon Slayers. The aim of Hashira Training is to improve all Demon Slayers' physical abilities and overall health and condition, giving the members of the Demon Slayer Corps a better chance of winning the war against demons. Each of the Hashira oversees a different part of the training program. Known training includes: basic stamina training, flexibility training, quick movement training, sword skill training, pounding training, and muscle reinforcement training. Hashira Training is extremely strenuous; because of this, a majority of the Demon Slayers view the training session as an everlasting trip in hell, with a few notable exceptions who see the session as a chance to improve themselves. As a general rule, Hashira must take part in each other's training sessions.
It is considered a win-win situation for both the Hashira and the Demon Slayers, as even the Hashira get to improve due to being constantly attacked by wave upon wave of juniors ranked lower than themselves. This training method has proven to be very effective in the Infinity Castle Arc where the majority of Demon Slayers were able to effectively kill Lower Rank-level demons regardless of their ranking. After the fight with Lower Rank One, Enmu, the Upper Rank Three, Akaza, shows up. A battle between Akaza and Kyojuro Rengoku occurs, and as a result of the fight, Kyojuro dies from his wounds and leaves an empty Hashira spot, while Akaza flees with his life. Not long after that, Tengen Uzui takes Tanjiro and his group to a mission in the Entertainment District. There, they encounter Upper Rank Six, Daki and Gyutaro. As a result of their fight, Daki and Gyutaro died, and Tengen lost his left eye and arm, forcing him to retire and leave a second vacant Hashira position.
However, despite his forced retirement, Tengen (along with his wives) still assists with the Demon Slayer Training Program. After Muzan Kibutsuji breaks into the Ubuyashiki Manor, he is attacked by Gyomei Himejima, the Stone Hashira, in an attempt to slay him, but Muzan escapes into the Infinity Castle with several other Demon Slayers chasing after them, only for them to be separated by Nakime, the new Upper Rank Four. Several duels break out in the Infinity Castle between demons and Demon Slayers. The Hashira and the other Demon Slayers face off against many demons who all have equal strength to that of a Lower Rank. Shinobu Kocho attempted to kill the Upper Rank Two Doma, who was responsible for the death of her older sister. However, she is killed and absorbed by Doma. Shinobu's younger sister, Kanao, and Inosuke then fight Doma immediately after and were able to defeat the demon thanks to the poison inside Shinobu's body. Zenitsu runs into the new Upper Rank Six, the other former apprentice of his master, Kaigaku, and engages him in a duel to the death, in which Kaigaku with his Enhanced Breathing Techniques nearly kills Zenitsu, but Zenitsu finally decides to behead Kaigaku with a secret technique he created. The former was saved by Yushiro at the end. Elsewhere, Tanjiro and Giyu Tomioka are ambushed by the Upper Rank Three, Akaza.
After a long battle, Tanjiro beheads Akaza, although the demon manages to survive this attack, and eventually the battle is won by the Upper Rank committing suicide. The two Demon Slayers come out victorious, while Muichiro Tokito is separated from Gyomei by Nakime and sent to the room of Kokushibo, Upper Rank One. Later on, Genya Shinazugawa, Sanemi Shinazugawa, and finally Gyomei join the fight, eventually ending in a victory, but at the cost of several injuries and losing Muichiro as much as Genya in the end. The character for Hashira (柱 (はしら), Hashira?) consists of nine strokes, which is said to be the reason for there being nine Hashira at the start of the series. All of the Hashira have Destroyer of Demons (惡 (あっ) (き) (めっ) (さつ), Akki Messatsu?) engraved on their weapons. Shinobu has Evil Demon (惡 (あっ) (き), Akki?) engraved on the right side of the blade, and Destruction (滅 (めっ) (さつ), Messatsu? ) engraved on the left side due to her sword's structure. The following is the Hashira ranked in an arm wrestling competition. The following is the Hashira ranked in terms of height. The following is the Hashira ranked in terms of openness. The following is the Hashira ranked in terms of running speed. Obanai ran like a snake (zig-zag) instead of in a straight line. It is stated that its possible that he could've ranked higher if he sprinted straight. Mitsuri ran right after she finished eating. 4.0 4.1 4.2 Kimetsu no Yaiba Manga: Volume 11, (Extra Pages). Kimetsu no Yaiba First Fanbook.
Sword Art Online is a Japanese light novel series written by Reki Kawahara with accompanying illustrations drawn by abec. The series takes place in the near-future and focuses on various virtual reality MMORPG worlds. ASCII Media Works began publishing the novels on April 10, 2009 under their Dengeki Bunko imprint. Russia. With more than 16 million copies in print worldwide, there are future plans for publications in Germany, Italy, Austria, Switzerland, Vietnam and others. Kawahara also began writing a parallel series of light novels titled Sword Art Online: Progressive, a spin-off that focuses on the clearing of Aincrad, unlike the Aincrad stories of the main series. As of June 10, 2021, eight volumes have been published as part of the Progressive series. In addition to the original storyline of Sword Art Online and Sword Art Online: Progressive, Kawahara has also written and published Sword Art Online side stories. Accel World, have been sold at Comitia, Dengeki Bunko's Fair and have come along with the limited edition Blu-Ray/DVD Sword Art Online compilation volumes.
Before Sword Art Online was published, Kawahara had posted Sword Art Online novels on his website and there are still a few side stories on Sword Art Online, although the original novels have been removed. In addition, Kawahara has published a side story of Sword Art Online in one of his other works, Accel World. In the tenth volume of Accel World, there is a chapter where it depicts a cross over between Sword Art Online and Accel World. Several of the side stories that he has released are in a collection called the Sword Art Online Material Edition, sold at the Comitia dōjinshi-selling event, which range from novels to manga. However, all of the art in the Material Editions is drawn by Kawahara himself. Aside from the light novels written by Kawahara, there are also two spin-offs written by other authors with supervision by him. The first one is Sword Art Online Alternative: Gun Gale Online series written by Keiichi Sigsawa and illustrated by Kouhaku Kuroboshi, while the other is Sword Art Online Alternative: Clover's Regret, written by Watase Souichirou and illustrated by Ginta. While both of these series take place in the same world as the main series written by Kawahara, they each feature different characters as the focus compared to the main series.
Afterword of the first light novel volume.(April 2009).1〉アインクラッド (電撃文庫) (in Japanese).26 V (in Japanese).(October 2012).1 (電撃文庫) (in Japanese).(June 2021).8 (電撃文庫) (in Japanese). Kawahara, Reki.(in Japanese).
Sword Art Online"Light Novel and Manga Release Details Listed". Kawahara, Reki (22 April 2014). Sword Art Online 1: Aincrad.(10 August 2009).2〉アインクラッド (電撃文庫) (in Japanese). Sword Art Online 2: Aincrad.(10 December 2009).3〉フェアリィ・ダンス (電撃文庫) (in Japanese). Sword Art Online 3: Fairy Dance.(April 2010).4〉フェアリィ・ダンス (電撃文庫) (in Japanese). Sword Art Online 4: Fairy Dance.(August 2010).5〉ファントム・バレット (電撃文庫) (in Japanese).
Sword Art Online 5. Yen On.(December 2010).(6) (電撃文庫) (in Japanese). Sword Art Online 6. Yen On.(April 2011).7〉マザーズ・ロザリオ (電撃文庫) (in Japanese). Sword Art Online 7. Yen On.(August 2011).8〉アーリー・アンド・レイト (電撃文庫) (in Japanese). Sword Art Online 8. Yen On. (10 February 2012).(9) (電撃文庫) (in Japanese). Sword Art Online 9. Yen On.(July 2012).10〉アリシゼーション・ランニング (電撃文庫) (in Japanese).