Kyokudozan was born in
Tokyo, but moved to his mother's hometown of
Tokunoshima in
Ōshima District as a child. In high school he was offered a
volleyball scholarship, but he opted for sumo. He joined the newly formed
Ōshima stable, making his professional debut in May 1980. He was one of the lightest sumo wrestlers ever, capable of running the 100 metres in 11 seconds. He did not reach 100 kg in weight until 1989, the year he was promoted to the top
makuuchi division. Kyokudozan stayed in the top division for 48 tournaments.
Mainoumi was the only
makuuchi wrestler lighter than himself during this period. In May 1992 he defeated
ōzeki Konishiki, winner of the previous tournament and some 150 kg heavier than him, with the rare leg-sweeping technique
ketaguri. In September 1992 he reached his highest rank of
komusubi. Unusually for someone making their ''
san'yaku debut he was able to hold his rank. For this he was awarded the Kantō-shō, or Fighting Spirit prize. In March 1993 he defeated the newly crowned Yokozuna Akebono to earn his only kinboshi.'' == Political career ==