Mimana embarked on her journey in acting through numerous TAFTA and NIDA screen courses from 2008 to 2019. She honed her theatrical skill through work experience at The Sydney Theatre Company in 2017. Once graduating high school, she moved to Tokyo for her gap year, before moving back to Australia in 2020, where she began her university degree while cast in EDEN on Stan (2020) and various commercials. In 2023, Mimana graduated with a Bachelor of Arts with an extended major in writing. Mimana is currently modelling in Tokyo as well as continuing her acting studies in Japanese. Her reels include both English and Japanese.