Sow Hirosawa moved to Tokyo to become a pastry chef. She had been interested in movies and dramas since she was little. She belonged to an entertainment agency and began to appear in movies and the stage. In the 2010 movie "The Knot," she played the wife of the protagonist's adultery. She studied abroad in Korea from 2012 to 2013 and also appeared in movies in Korea. In 2013, she transferred from MS Entertainment to A-Team.