He began his sumo career in the spring of 1965, joining
Futagoyama stable which had been set up his elder brother, former
yokozuna Wakanohana Kanji I, three years previously. Reportedly, when he joined, Wakanohana had told him that they were no longer brothers and gave him harsh training, but Takanohana never complained. Debuting under his own surname of Hanada, he would win out in a five-way playoff to secure the sixth division championship. He reached the top
makuuchi division in November 1968 at the age of just 18, the youngest ever at the time (the record is now held by his son
Takanohana Kōji). He weighed barely 100 kg, and would remain one of the lightest men in the top division for the rest of his career. He adopted the
shikona of Takanohana in 1969. He was the last man to beat
yokozuna Taihō, in May 1971. As he rose up the rankings he collected nine
special prizes, including four prestigious
ginō-shō, or Technique Awards. After finishing as runner-up in consecutive tournaments in May and July 1972 he reached sumo's second highest rank of
ōzeki in November 1972. He was promoted at the same time as his friend and rival
Wajima, who quickly went on to be promoted to
yokozuna. Takanohana's progress was slower, but he did win two top division tournament (or
honbasho) championships in March and September 1975, each time delighting the crowds by defeating the giant
yokozuna Kitanoumi in a playoff. He and Wakanohana were the first brothers ever to each win a top division tournament title. He was also runner-up in the January and March 1977 tournaments. However he was ultimately unable to defeat Kitanoumi or Wajima on a regular basis, and was hampered by his inability to put on weight, and so never made the
yokozuna rank. Nevertheless, he was an
ōzeki for fifty tournaments, corresponding to over eight years in the rank. This was a record until July 2007 when it was broken by
Chiyotaikai. He was a bigger crowd attraction than some
yokozuna. By the early 1980s he was finding it harder to hold onto his rank, and had been overtaken by his stablemate
Wakanohana Kanji II, and other younger wrestlers. One of his final bouts was a memorable clash in September 1980 with
Hawaiian born
Takamiyama, who was nearly twice his weight and like Takanohana, extremely popular with the Japanese public. Takanohana looked to have won the match with an underarm throw, only for the
judges to reverse the referee's decision and rule that the tip of Takanohana's topknot or
ōichōmage had brushed the surface of the
dohyō ahead of his opponent. After losing to the rising star
Chiyonofuji twice in a row in September and November 1980, he decided the time was right to retire. The two were often compared, and Takanohana had been something of a mentor to Chiyonofuji, advising him to give up smoking to help increase his weight, something that Takanohana himself had never been able to manage. When he retired from sumo in January 1981, Takanohana had been ranked at
ōzeki for what was then a
record fifty tournaments. ==After retirement==