A former amateur sumo champion at Meiji University, Buyūzan made his professional debut in the third makushita division in March 1997.
He won the jūryō division championship or yūshō in July 2001, coming through an unprecedented eight man playoff and with a mere 9–6 score – the lowest ever yūshō–winning record for a 15 day tournament.
In January 2007 he managed a 6-1 mark which put him in contention for a return to jūryō, but he faltered again with three straight makekoshi scores.
He remained in the makushita division until his retirement after a loss on Day 13 of the 2007 Kyushu basho which gave him another makekoshi.
Sanshō key: F=Fighting spirit; O=Outstanding performance; T=Technique Also shown: ★=Kinboshi; P=Playoff(s) Divisions: Makuuchi — Jūryō — Makushita — Sandanme — Jonidan — Jonokuchi