Matsumura was born the oldest son of Sadanoumi Kōji, a sumo wrestler active in the 1980s who reached the rank of komusubi.

[3] Matsumura is nevertheless familiar with the sumo world since his father, under the name of Tagonoura, was a coach at Dewanoumi stable and his family regularly attended the senshūraku's after parties.

Being a lighter wrestler, he struggled to succeed for a number of years, but in November 2007 he managed to take the sandanme division championship with a perfect 7–0 record.

Sadanoumi's promotion is also the ninth time in sumo history that a father and son have both attained the rank of sekitori.

[5] As before he began to struggle again in makushita and would remain there for twelve tournaments before working his way back up and finally re-entering jūryō in January 2014.

Sumo historians noted that Sadanoumi had repeated his father's same impressive achievement of earning the Fighting Spirit prize in his makuuchi debut 34 years earlier in 1980.

In order to avoid risky surgery he wears special hard contacts every night that dramatically improve his vision for the following day.

In March 2018 he won the jūryō division championship with an 11–4 record, beating Akiseyama in a playoff, to ensure his return to makuuchi.

[14] In May 2022 he scored eleven wins against four losses to share runner-up honours alongside Takanoshō and Daieishō, and received his second Fighting Spirit Prize and first since 2014.

On this subject he regularly jokes with Tamawashi, who has tallied 117 tournaments since his debut in 2004 and is the oldest active sekitori (at 38); the two debating who is the other's senior.

[17] After conceding eleven defeats in November 2024, Sadanoumi lost his status as a makuuchi wrestler when the banzuke for the first tournament of 2025 was published.