In June 2005, Iwasa recorded a duet with Naoya Ogawa called "Katte ni Shinryakusha" (An Invader in My Own Way), which was used as an ending song of Sgt.
Iwasa was in the drama Gal Circle as Rika, a ganguro girl who scams her friends for money.
In 2013 she played the lead role in Junan (受難, Passion), the film adaptation of Kaoruko Himeno's novel about a woman who grows a talking face near her genitals after asking God for help.
[1] On October 1, 2020, she announced her decision to retire from the entertainment industry and take a new career of nursing care.
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