The older of Lowee's twin Goddess Candidates, Rom is Blanc’s younger sister and Ram's older twin. The ever shy Rom is nervous around strangers and hesitant to speak up.

Like Nepgear and Uni, she was trapped in a sleep capsule for several years and now travels with Nepgear on her quest to retake Planeptune.

Despite her natural timidity, Rom does her best to be courageous and support her friends on and off the battlefield.

When she uses her Goddess Transformation, she becomes White Sister.