As a junior she competed at the 2009 World Junior Speed Skating Championships and won the bronze medal in the 500 metres event. Nishina represented her nation at the  World Single Distance Speed Skating Championships and at the World Sprint Speed Skating Championships for Women. At the 2011 World Single Distance Speed Skating Championships she competed in the 500 metres event finishing 17th. At the 2012 World Sprint Speed Skating Championships she finished 15th overall. She participated at the European Speed Skating Championships for Women in 1981., She also competed at other international competitions, including at ISU Speed Skating World Cups and Asian Speed Skating Championships.