Ishigaki played lead for the Japanese junior women's team (skipped by Sayaka Yoshimura) from 2011 to 2013 winning three straight Pacific-Asia Junior Curling Championships in the process. The team finished in 8th place at the 2011 World Junior Curling Championships, 5th place at the 2012 World Junior Curling Championships and won a bronze medal at the 2013 World Junior Curling Championships. The team also played in two Winter Universiades while Ishigaki was attending Sapporo International University. The team places fourth in 2011 and 7th in 2013.