Career
Iwamura is best known for her role as Mai in Battle Royale. Iwamura also fulfills some "stand-in" roles as Izumi Kanai, Noriko Nakagawa, Hirono Shimizu, and Haruka Tanizawa. Iwamura also stars as Mai in Battle Royale II: Requiem.
She also voiced MarineAngemon in the anime Digimon Tamers.