She remained in good form in the 2012 season, running 70:39 for fifth at the Kagawa-Marugame Half Marathon and a best of 2:25:26 hours for fifth at the Nagoya Marathon. A win at the Sapporo Half Marathon followed in July and this led to an appearances at the 2012 IAAF World Half Marathon Championships, where she was ninth and helped the Japanese women to the team bronze. In a quick field at November's Yokohama Women's Marathon she was the fifth-placer and second Japanese with a time of 2:27:06 hours.