Onuma started playing volleyball as a spiker for Thailand's national team in 2006. In 2009, she helped the Thai team won the Asian Championship for the first time and was also awarded the Most Valuable Player of the tournament. During the tournament, she was called "Thailand's Toy Cannon" in an article by the Asian Volleyball Confederation. In addition, Onuma won the
2009 Asian Club Championship with her team
Federbrau and was selected as the Most Valuable Player and Best Spiker. She repeated as champion in the
2010 Asian Club Championship and also won the Best Spiker and Best Scorer of the event. She later participated in the
2010 Club World Championship, finishing in the fifth place playing with Federbrau and the 2011 Club World Championship also ranked fifth, this time with Chang. In 2013 she won the 8th Siamsport Awards Popular Vote. On 6 August 2014 it was announced that she will be joining
JT Marvelous. She was on the list 2019 Korea-Thailand all star super match competition. Onuma retired at the age of 35, after the
2021 FIVB Volleyball Women's Nations League. ==Clubs==