During the 2nd Pony Canyon Koetama Audition, she used the alias rimyu.
In 2016, she made her anime film debut in Garakowa: Restore the World, where she voiced as Remo, the female protagonist.
She was affiliated to Pony Canyon Artists / Swallow. In 2017, Hanamori switched her affiliation to m&i.
She debuted on 2013, voicing Souta Amaya in Aiura.
In 2015, she served as the 62nd personality of Radio Flush.
When Hanamori was in the second year of high school, her friend encouraged her to try out voiceover as a career choice, piquing Hanamori's interest in voice actors.