Sakemi qualified for three swimming events at the 2008 Summer Olympics in Beijing, by eclipsing FINA B-standard entry times of 1:11.20 (100 m breaststroke) and 2:33.17 (200 m breaststroke) from the Maria Lenk Trophy in Rio de Janeiro. In the 100 m breaststroke, Sakemi challenged seven other swimmers on the third heat, including Argentina's Liliana Guiscardo, who beat her from the trials two months earlier. She edged out Iceland's Erla Dögg Haraldsdóttir to take the fifth spot and thirty-ninth overall by three hundredths of a second (0.03), in 1:11.75. In the 200 m breaststroke, Sakemi rounded out the first heat in last place and fortieth overall against Lithuania's Raminta Dvariškytė, and Finland's Noora Laukkanen, with a slowest time of 2:39.13.