He debuted in May 2015 as a wrestler for Kokonoe stable and reached his highest rank of Juryo 8 in March 2019.

With the retirement of Tochiozan occurring in the same tournament, it left no sekitori from Kochi Prefecture which had had continuous representation in the top two divisions since Tosanoumi entered juryo in 1994.

In November 2021 he fought Ryuden for the makushita division championship with both men tied at 6-0, but he was defeated.

[citation needed] On April 29, 2021 Chiyonoumi married a 28 year old nurse who he had met in 2018.

[5] Sanshō key: F=Fighting spirit; O=Outstanding performance; T=Technique     Also shown: ★=Kinboshi; P=Playoff(s) Divisions: Makuuchi — Jūryō — Makushita — Sandanme — Jonidan — Jonokuchi