Koatsu Yashima is from Japan and received her early training at Noriko Koizumi Ballet Studio. In 2015, she moved to New York City to train in the professional training program at Gelsey Kirkland Academy. She joined Gelsey Kirkland Ballet as a trainee in 2016. She performed soloist and principal roles in ballets such as The Nutcracker, La Vivandiere and Paquita. This is her first season with Eugene Ballet.