In his jūryō debut in January 2008 he lost eight bouts in the first ten days but then recovered to win his last five matches in a row.

He was forced to retire by the Japan Sumo Association in April 2011, after an investigation showed his name had appeared in text messages along with several other wrestlers who were prepared to throw bouts.

[2] In January 2012 he became a professional wrestler with a ring name of Shogun Okamoto and joined the Inoki Genome Federation.

Wakakirin's favourite techniques were tsuppari (a series of rapid thrusts to the opponent's chest) and yori (force out).

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