is a Japanese professional sumo wrestler from Kurayoshi, Tottori. After a successful amateur career, he turned professional in January 2023, via system, winning that division's championship and being promoted to sumo's top division in July 2023. Nicknamed "Reiwa monster" thanks to his record-breaking promotions, his highest rank has been 1. A former member of Miyagino stable under the guidance of former Hakuhà Â, he currently wrestles for Isegahama stable.
As a kid, Ochiai played football from the first grade to the fourth grade. Because of his physique and poor playing habits, he was nevertheless advised to quit the sport. While in second grade at Seitoku Elementary School in Kurayoshi, the same school as former Kotozakura, he took part in the "Sakura-zumo" children's tournament and decided to take up the sport when he won the individual competition as a fourth grader. It was only during that time he began to wrestle regularly. He entered Tottori Nishi Junior High School, the sister school of Tottori Jà Âhoku High School, but had to hang in there, calling his father at the end of his first sumo training session to throw in the towel, the rigors of training being too much for him. Encouraged by Ichinojà Â, who was Jà Âhoku High's club captain, he nevertheless kept at it and during the junior high school national championships in his second year, he defeated the reigning champion, citing this moment as the one that made him love sumo. In ninth grade, he won the Hakuhà  Cup junior high school tournament. However, it was also during these years that he injured his shoulder, a condition that has not yet fully healed. He then entered Tottori Jà Âhoku High School and won the title of high school in his second and third year of high school competition; in his third year, he was in the top eight at the All-Japan Championships and thus was eligible for sandanme tsukedashi. After graduating from high school, he focused on healing his shoulder injury and worked at his father's metalwork machinery company Noda Gumi in Tottori. By virtue of winning the All Japan Corporate Sumo Championship in September 2022 (and thus being named Corporate Yokozuna) he was eligible to enter professional sumo as '.
At the invitation of Miyagino (the 69th Hakuhà Â), Ochiai joined the Miyagino stable. He made his professional debut in January 2023 at the rank of 15 to reflect his amateur success (). He won the title with an undefeated record of seven wins and was subsequently promoted to the division for March, becoming the first wrestler to earn a promotion after just one tournament in 90 years. Since the abolition of the system for promotion to the top of the division in September 2023, Ochiai is likely to be the last wrestler to be promoted to the division in just one tournament in sumo's modern history. Given Ochiai's quick rise to the second-highest division, Miyagino confessed he hadn't had the time to think of a for his apprentice. Thanks to his record-breaking promotion, Ochiai began to be nicknamed , meaning 'Reiwa monster', in reference to Musà Âyama who was nicknamed 'Heisei monster' after he too was promoted to after being undefeated as a .
Ochiai experienced his first defeat in professional sumo on day 2 of the Osaka tournament (in March 2023) against the other newly promoted , Tamashà Âhà Â. On the 6th day of the same tournament, he announced that he had made the unusual decision to become the of wrestler Hokuseihà  because he wanted to experience this role himself and considered it a learning experience. He finished the March 2023 tournament with 10âÂÂ5 record.
Ochiai was promoted to 8 in the May 2023 tournament. He finished the tournament with 14 wins along with Gà Ânoyama, who defeated Ochiai on Day 11. The two wrestlers were thus competing for the jà «ryà  championship and Ochiai would have been the first wrestler under the age of 20 to win the title since his master Hakuhà Â's victory at the 2004 tournament. Ochiai was however beaten again by Gà Ânoyama in the championship playoff. It marked the first time since 1949 that the championship was decided in a playoff between two wrestlers with 14âÂÂ1 records.
After the May 2023 tournament it was announced that Ochiai received the Hakuà Âhà  () from his stablemaster. The ring name is a combination of "Haku" (), referring to the province of Hà Âki () which became Tottori Prefecture, "à Â" () from "Sakura-zumo" (), a sumo tournament in Kurayoshi in which he participated when he was a schoolboy and finally "Hà Â" () to refer to Ochiai's master, Hakuhà Â.
On 26 June 2023, Hakuà Âhà Â's name appeared on the July 2023 sumo tournament rankings at the position of west 17, ushering his entry into sumo's top division in just his fourth professional tournament. Hakuà Âhà  is the sixth-youngest wrestler since 1990 to reach the top division, doing so at the age of 19 years and 10 months, as well as the second wrestler since the Shà Âwa era to reach in three tournaments since their debut (the other being Endà Â). Upon his promotion, Hakuà Âhà  told reporters that his goal for his first top division tournament was 12 wins and the (Outstanding Performance prize), which his stablemaster Miyagino achieved in his first appearance in May 2004. Hakuà Âhà  said that he hadn't gotten used to his new name yet, but said that it felt fresh. He said he was satisfied with his performances in his first three tournaments, but that from now on it would not be so easy.
Hakuà Âhà  began his tournament with a win over Aoiyama, and went on to win the majority of his matches although he also lost to former Takarafuji (on Day 3) and Ryà «den (Day 5). On Day 6, he overcame Gà Ânoyama, who had beaten him twice for the division title in the previous tournament; defeating him by and bringing his 5-match winning streak to a halt. In September 2023, Hakuà Âhà  revealed to the press that during the tournament his shoulder would dislocate after days of fighting, having dislocated a total of three times during the duration of the tournament. Wishing to continue to wrestle to satisfy the expectations of those around him and the public, Hakuà Âhà  reached a positive record on Day 11, with a victory over the former Takayasu. He then went on to defeat Abi the following day. This victory marked the first time a newly-promoted had won a match against a wrestler currently in since Ichinojà  defeated then- Kisenosato at the September 2014 tournament. Hakuà Âhà  then went on to achieve back-to-back victories on Day 13 and 14 over tournament leaders Nishikigi and Hokutofuji, strengthening his own chances of claiming the championship. At the end of the tournament, Hakuà Âhà  faced Hà Âshà Âryà «, both recording 11 wins to 3 losses. The winner of this match would have to challenge Hokutofuji, who, with 12 wins and 3 losses had secured a place in a playoff for the championship. Hà Âshà Âryà « nevertheless defeated Hakuà Âhà  by , effectively eliminating Hakuà Âhà  from the title race. On the fifteenth day of the tournament Hakuà Âhà  was however announced as the recipient of the sanshà  awards for Technique and Fighting Spirit. These prizes, awarded in just four tournaments, make Hakuà Âhà  the fastest prize winner in sumo history, breaking the records set by former Ichinojà  and former Miyabiyama, who had won the awards in five tournaments since their professional debuts.
A few days after end of the July tournament, it was announced that Hakuà Âhà  would withdraw from the summer regional tours because of left shoulder pain. On 29 August, one day after the September was released, he told reporters that he was not in very good condition. At the time he did not rule out the possibility of withdrawing from the September tournament, saying that even if he did and subsequently dropped in the rankings, his goal was not to be in but to pursue his dream and do his best. On September 4, it was confirmed that Hakuà Âhà  would indeed be absent for the September tournament. His master Miyagino had already raised the possibility of an absence on August 27 due to a possible operation to treat pain caused by a subluxation of the left shoulder, an old injury of Hakuà Âhà Â's. The operation in question finally took place on August 31, forcing Hakuà Âhà  into a period of remission that could last until the end of the year to achieve complete recovery. After his first away tournament, he confided to Yahoo! Sports his frustration at not being able to take part when the others promoted at the same time as him to (Shà Ânannoumi, Gà Ânoyama and Atamifuji) were able to participate and performed quite well.
Hakuà Âhà  was demoted on the November 2023 to the division. Shortly after the rankings were released, it was announced that Hakuà Âhà  would withdraw from that tournament to continue rehabilitation. Stablemaster Miyagino said that the objective was for Hakuà Âhà  to compete in the January 2024 tournament. Five days before the start of the January 2024 tournament, Hakuà Âhà ÂâÂÂdemoted to the rank of 5âÂÂwas medically cleared to compete. Miyagino decided to wait a few more days before giving Hakuà Âhà  permission to enter the tournament.
Hakuà Âhà  was still unsure whether he would be able to compete in the January 2024 tournament, but confided afterwards that despite his master's cautious advice he decided to take part to gamble on his chances of once again being promoted to in one tournament, having been relegated to the top of the division. Having resumed competition, he suffered defeat on his third match to à Ânomatsu stable's à Ânokatsu, the last wrestler to turn professional using the status of 15 before the system was abolished in September 2023. He later cited this match as his highlight of the tournament, having lost even though he felt his performance was the best of his seven matches. Despite this defeat, Hakuà Âhà  recorded, on the ninth day of competition, a record by beating Kototebakari (younger brother of Kotoshà Âhà Â) by . Hakuà Âhà  continued to improve his score, ending the tournament with a score of 6âÂÂ1, his last victory coming when he defeated upper-division and former -ranked wrestler Chiyomaru on Day 13. After the tournament, he commented that he was not at all satisfied with his performance and that his results had been down to luck. Later in January, it was announced that Hakuà Âhà Â's score would be enough to promote him back into the division for the March tournament.
Hakuà Âhà  began his return to status in the spotlight after the abuse case and the retirement of his senior stablemate Hokuseihà Â, making him the most senior wrestler in Miyagino stable at the time. In his first match, in which he appeared with a for the first time, he defeated Kitaharima, his senior by 17 years. Hakuà Âhà  ended the tournament with a barely-reached refusing, however, to attribute his score to the atmosphere surrounding the possible forthcoming closure of his stable. In the last week of March, it was confirmed that Hakuà Âhà  and all the wrestlers and coaches from Miyagino stable would be transferred to Isegahama stable for an indefinite period of time.
On the second day of the May 2024 tournament, Hakuà Âhà  suffered a torn right biceps in his match against Tamashà Âhà Â. He took the decision to continue competing, nonetheless suffering defeat against on Day 3. On the eighth day he declared himself absent from the tournament due to a COVID-19 infection, the medical report prescribing five days' rest. Steadily, Hakuà Âhà  regained the top division for the 2025 January tournament, after a period in which it was noted that, although he had lost his momentum, he had continued to demonstrate good faith without ever really reviving his "Reiwa monster" nickname he had earned after some standout performances.
During the 2025 May tournament, Hakuà Âhà  performed well during the first part of the tournament by winning seven consecutive matches, qualifying him among the leading wrestlers for the championship with title-seeker à Ânosato. His winning streak came to an end on Day 8, however, when he conceded defeat to Meisei, now chasing the tournament leader in a group with Aonishiki and Wakatakakage. On the tenth day, he suffered a second defeat in his match against Daieishà Â, falling in his pursuit of the tournament leader. Hakuà Âhà  ended the tournament with a run of six consecutive losses starting on Day 10, ending his tournament with a barely achieved score.
Following the final retirement of his former master Miyagino (the 69th Hakuhà Â) in June 2025, Hakuà Âhà  and the other members of the former Miyagino stable were instructed to remain under the tutelage of Isegahama stable. When questioned by the press, he refused to comment on his master's decision.
On the eighth day of the July 2025 tournament in Nagoya, Hakuà Âhà  notched his first career by defeating à Ânosato. In the next tournament, in September, he repeated the feat on the fourth day. Since he also achieved a positive score during that last tournament, he was awarded the Outstanding Performance prize, the first of his career.
Hakuà Âhà  kicked off the November 2025 tournament by defeating Hà Âshà Âryà « for his third career gold star.
Beginning with the January 2026 tournament, Hakuà Âhà  changed his name to Hakunofuji (). At the time of the rankings release he was one of nine wrestlers in Isegahama stable, and one of eight formerly associated with Miyagino stable, to change their names and adopt the suffix related to the shikona of his current stable master, the former Terunofuji. During the first tournament under his new name, Hakunofuji defeated à Ânosato for his fourth . This made him the third wrestler after Tosanoumi and Hokutofuji to collect at least one gold star in four straight tournaments. On Day 11 of the tournament, Hakunofuji appeared to collapse from his left knee in his loss against Aonishiki. He withdrew from the tournament two days later, with his medical certificate indicating a MTP ligament injury to his left big toe requiring about four weeks of treatment. The withdrawal left Hakunofuji with a losing record for the tournament.
A few days after the rankings were released for the March 2026 tournament, it was reported that the Japan Sumo Association's compliance committee was investigating allegations that Hakunofuji was physically assaulted by his stablemaster Isegahama (the former Terunofuji). Hakunofuji was reportedly questioned by the Sumo Association along with Isegahama and stablemate Nishikifuji, and did not initially join practice sessions at his stable's Osaka training location. On the day that the allegations were reported, the former Terunofuji was asked about the allegations, as well as Hakunofuji's absence from training in Osaka at the time. Isegahama stated that Hakunofuji's absence was probably due to his ligament injury, and that he would join the rest of the stable in a few days.
Despite the ongoing scandal investigation and his inability to do proper practice, Hakunofuji decided to compete in the March 2026 tournament. However, he appeared to re-injure his left foot in his day one loss to à Âshoma. He would withdraw from the tournament the next day, marking the fifth time he has gone kyà «jà  in his career. He returned to competition on Day 7, facing à Ânokatsu, who returned two days prior.
Hakunofuji is recognised as a wrestler who can adapt to any technique. Just before his debut, he defined his fighting style as relying mainly on speed and a low stance, enabling him to easily reach his opponent's . His profile on the official website of the Japanese Sumo Association defines his favourite hold as , a right hand outside, left hand inside grip on his opponent's .
To perfect his technique, he regularly watches the old matches of his master (former Hakuhà Â), particularly for the latter's ability to quickly seize his opponent's and destabilise him with throwing techniques.
Hakunofuji is the youngest in his family and has two older brothers. His hobbies include enka, period drama and his favourite movies are The Chronicles of Narnia.
Hakunofuji has been friends with former amateur sumo champion and gridiron football up and comer Hidetora Hanada since junior high school. Living in the United States, Hanada returned to Japan in May 2024 and went to cheer on then-Hakuà Âhà  at the Ryà Âgoku Kokugikan.