Juri Nagatsuma (長妻 樹里, Nagatsuma Juri, October 27, 1988) is a Japanese voice actress (seiyuu) and singer from Sapporo, Hokkaido, Japan. She is 161 cm tall and has blood type O. She is affiliated with Raccoon Dog. She was formerly affiliated with Pro Fit. She graduate from Pro Fit Voice Actor Training Center (11th term). Ion Momoyama (桃山いおん, Momoyama Ion) is an alias used by Juri Nagatsuma for adult games and anime.