Ōnokatsu Kazuhiro

) is a professional sumo wrestler from Mongolia. His highest rank is 3.

Early life Choijilsüren comes from Uvs Province, a region known as Mongolia's "wrestling capital". At elementary school, he played football. When he was in junior high school, he won a mathematical olympiads in his hometown. He also practiced freestyle wrestling and bökh for only one year before coming to Japan. In November 2015, he took part in an amateur sumo tournament in Ulaanbaatar and was noticed by teachers who came to scout promising talents. They then invited him to come to Japan as part of a school exchange in spring 2016. By his own admission, he wasn't interested in practicing sumo, but on his father's advice he nevertheless decided to go.

Choijilsüren had a prolific amateur career, winning the Kantō openweight championship. He also helped his team to second place in the national high school team competition, a first for a Kanagawa school. At this university, he won the East Japan Rookie Championship during his first year and reached the quarter-finals of the National Tournament in his second year. Choijilsüren hence became a student and was guaranteed the rank of 15 in his professional debut.

During his student days, he remembered the COVID-19 pandemic, forcing him to remain isolated in his dormitory for half a year, all training having also been cancelled by his school. However, he finished his first tournament with a score of , also losing his first match, missing the promotion.

At the March 2024 tournament, he secured his promotion to the division, notably scoring a fourth victory over future- . During his first tournament as a , Ōnokatsu narrowly failed to win his division's championship, ending just behind former Wakatakakage. His score of , however, propelled him to the top of the jūryō rankings.

promotion After a good performance in the July 2024 tournament, Ōnokatsu was promoted to , professional sumo's top division. After promotion to the highest professional division, Ōnokatsu stagnated for a while, failing to win more than ten victories in his first three tournaments.

At the January 2026 tournament, Ōnokatsu became the fourth wrestler in sumo history to win two consecutive matches by default, due to the injury withdrawal of his scheduled opponents. Ōnokatsu withdrew on the second day of the March 2026 tournament after landing awkwardly on his left knee in his day one match against Ichiyamamoto. It was later revealed that he had sprained his left ankle during the fall. This marked the first absence of his career. He returned to competition on Day 5, losing to unbeaten Takanoshō. He withdrew once again on Day 9 after only winning one of his matches, once again due to the left ankle sprain.

Fighting style Ōnokatsu specializes in grabbing the front of his opponent's . The wrestler from whom he draws inspiration for his style is former Kakuryū. His Japanese has been described by the press as very academic.

Career record