Recruitments

The stable has strong links to Tottori Jōhoku High School's sumo program, with Hakuōhō, Hokuseihō and Ishiura all being graduates. Ishiura's father is the coach of the high school team.^[10]

Under the recommendation of Hakuhō, the stable began to scout promising talents. In 2020, when Hakuhō was not yet the stablemaster, the stable recruited Hokuseihō, a 2-meter-tall Mongolian wrestler.^[11] As he was raised in Hokkaido from the age of five, Miyagino was allowed to circumvent the Sumo Association's "one foreigner per stable" rule.^[12] Hokuseihō won consecutive championships in the second half of 2020 with perfect records in the jonokuchi, jonidan and sandanme divisions. In July 2021, he won the makushita championship and was promoted to jūryō. He reached the top makuuchi division in March 2023, reaching the rank of maegashira 6 later that year.

In July 2022, Hakuhō recruited 23 year-old Kawazoe Keita, a college yokozuna, into Miyagino-beya. Given Kawazoe's university title, he would enter at the rank of makushita 15 as his accomplishments allows him to use the makushita tsukedashi system.^[13] On December 1, it was announced that the stable recruited Ochiai Tetsuya, a two time High School Yokozuna. Similarly to Kawazoe, his high school accomplishments allows him to use the makushita tsukedashi system and enter at the rank of makushita 15.^[14] After a strong performance in his first professional tournament, Ochiai managed to win the makushita tournament with a perfect score, securing a promotion to jūryō, a first for a makushita tsukedashi. Following his achievement, Ochiai became the fourth sekitori in Miyagino stable and the first wrestler to achieve this rank since Hakuhō took charge of the stable.^[15] Ochiai received the shikona (ring name) of Hakuōhō prior to his top division debut.^[16]

In February 2024, the stable recruited Matsui Kanato, a Jōhoku High graduate who qualified among the top 8 national corporate wrestlers, becoming the first wrestler to qualify for tsukedachi status to be recruited by the Sumo Association since the new system was installed in September 2023. This recruitment makes Matsui the first tsukedachi in 24 years to be able to start his career at the lowest makushita rank, having to start at makushita tsukedachi 60.^[17]

Hokuseihō assault allegations

Following the January 2024 tournament the Sumo Association opened an investigation into Hokuseihō on allegations that he assaulted other wrestlers in his stable.^[18] The Sumo Association's Compliance Committee later found the allegations to be true.^[19] Hokuseihō submitted his retirement notification on 22 February 2024, the day before the full Sumo Association board was expected to take up the committee's recommendations—which included the retirement of Hokuseihō and the demotion of Miyagino by two positions in sumo's hierarchy.^[18][20]

On 23 February 2024 the Sumo Association met and accepted the resignation of Hokuseihō.^[21] Hakuhō was demoted from iin (committee member) to the lowest ranking of toshiyori (elder) and received a salary cut of 20 percent for three months.^[22][23] Additionally, the Sumo Association took actions that effectively removed Hakuhō as stablemaster for the time being, announcing that a member of the Isegahama ichimon would be appointed temporary stablemaster of Miyagino stable for the March 2024 tournament. Thereafter, the same group would oversee training of wrestlers in the stable for an unspecified period of time.^[23] Following the release of the March 2024 banzuke it was announced that Tamagaki (former komusubi Tomonohana), a coach at Ōshima stable, would be appointed acting master.^[24]

Temporary stable closure

At a meeting of elders prior to the March 2024 tournament in Osaka, Hakuhō apologized for the trouble that had been caused. The Isegahama ichimon then met to discuss several options for the stable. The options reportedly included having another coach in the stable take over as master, as well as the closure of the stable and the transfer of wrestlers and personnel to other stables in the Isegahama group.^[25] On the first day of the March tournament the Isegahama ichimon submitted a proposal to the Sumo Association to close Miyagino stable from April 2024 and possibly revive it again in the future.^[26] Some news reports from the pre-tournament meetings suggested that members of the stable had already proceeded on the assumption that the stable would close.^[27] In mid-March, plans surfaced to transfer Miyagino staff to one or more of the Isegahama ichimon stables. It soon became apparent that the preferred solution would be to transfer all staff to a single stable,^[28] with plans to transfer to the Ōshima and Asakayama stables each being rejected (respectively by the association and by Asakayama himself).^[29][30]

Public broadcaster NHK reported after the March tournament that a proposal had been put forward to move Miyagino personnel to Isegahama stable, led by the 63rd yokozuna Asahifuji.^[31] On 28 March 2024 the Sumo Association formally announced the closure of Miyagino stable for the foreseeable future and the transfer of wrestlers and coaches to Isegahama stable.^[2] The signboard outside of Miyagino stable was removed on 3 April,^[32] and personnel completed the move to Isegahama stable on 7 April.^[33] Training of Miyagino wrestlers with the Isegahama wrestlers commenced the following day, with Asahifuji commenting that he hoped Hakuhō could teach the combined group of about 40 wrestlers his skills as a yokozuna.^[34]

On the subject of the stable's closure, former Ishinriki confided to Tokyo Sports that the merger between the two stables would be hampered by a number of obstacles, citing in particular the difference in character and past tensions between Terunofuji and Hakuhō that could complicate cohabitation but also the fact that the Miyagino stable included wrestlers who were generally lower-ranked, and who would therefore have to keep a low profile in their new positions, as was the case for Fujishima stable when it merged with Futagoyama stable in 1993. Still according to Ishinriki, the merger situation could well last until Isegahama's definitive retirement in July 2025.^[35]

Following the May 2024 tournament it was announced that four lower-division wrestlers that began their professional careers with Miyagino stable (and were subsequently transferred to Isegahama) had all decided to retire. According to reports at the time, a number of Miyagino wrestlers considered themselves proud to be affiliated with the Miyagino name, and strongly felt that they could not accept a transfer to another stable.^[36]