According to Tengen Uzui, Gyomei was one of the two people who became a Hashira only two months after picking up a sword, the other being Muichiro Tokito.
1) Tengen Uzui
Without a doubt, the flamboyant Tengen Uzui is physically the fastest Hashira in the Demon Slayer Corps. His sound breathing technique is a derivative of thunder breathing, one of the quickest breathing styles.
He was also the youngest of the Hashira at only 14 years old, being considered a prodigy of the Corps who became a Hashira only two months after joining the Demon Slayers.
Afterwards, Muichiro would lose his memories and leave his old life behind to serve the Demon Slayer Corps. Due to his prominent strength and highly extensive training, he quickly rose to the rank of a Hashira in a mere two months.
Tokito Muichiro became a Hashira after two months of training despite it being stated that it takes five years for a normal person to be rightful of achieving such a title.
11/13 Shinjuro Rengoku, The (Former) Flame Hashira.
11/13 Sanemi Shinazugawa's The Third Oldest Of The Hashira (21) For someone only 21 years of age, Sanemi has a lot of pent-up anger, but his hatred for demons is justified.
Tengen is one of the only known Demon Slayer and Hashira to retire due to being permanently disabled instead of death or age, the other being Jigoro Kuwajima. He and Inosuke Hashibira are the only known Demon Slayers who use two Nichirin Swords instead of one.
Immense Speed & Reflexes: As a Hashira, Mitsuri is an extremely fast individual. Despite this, she is the slowest runner out of all her Hashira brethren (though she was on a full-stomach).
Fighting Style. Muichiro is the Mist Hashira, and therefore utilizes Mist Breathing. This form stems from Wind Breathing, a Breathing Style currently used by Sanemi Shinazugawa, the Wind Hashira.
Nezuko Kamado is one of the youngest characters in Demon Slayer as she is only 12 years old at the start of the story when she is turned into a demon.
Rengoku's fight in the Mugen Train arc showed his incredible speed and reflexes. He was able to match Akaza's speed, and his movements were so fast that it was almost impossible for the naked eye to keep up. Tengen, meanwhile, is the fastest runner out of all the Hashira.
Mitsuri. The love Hashira and upcoming featured character of season 3, Mitsuri is best known for her extreme affection for everyone in the Demon Slayer Corps.
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.
Keen Intellect: Shinobu possesses vast knowledge in using poison in combat. She has one of the best IQ in the Corps, having an IQ of over 200 making her a genius.
Zenitsu is at least close to Hashira level by the end and Godspeed has limited uses because it disables his legs after those uses. Zenitsu's faster but if this was an actual race or marathon, Shinobu would beat him.
1/14 He Has A Descendant
Like most of the characters, Tengen Uzui does have a descendant that looks just like him. His descendant is named Tenma Uzui and he's an Olympic-level gymnast representing Japan.
However, Uzui loses one of his arms and an eye in the fight, leaving Tengen Uzui with no choice but to retire from the Demon Slayer Corps. Also, the manga never specifies how the sound Hashira Tengen Uzui dies in the future, which gets us to the conclusion that he passes away from a natural cause.
Nezuko setting Tengen on fire. By the end of the battle, Gyutaro's poison has spread throughout Tengen's body resulting in his inability to speak. As he lays dying from the poison, Nezuko Kamado intervenes and uses her her Blood Demon Art to burn the poison out of his system, allowing him to rejoice with his wives.
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.
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. Unfortunately, he retired at the age of 35, when he lost his right leg in a fight with a demon.