Hikaru Kotama was a member of the seiyuu unit Earth Star Dream between 2014 and March 2018. She was also in it's sub-unit [Hikanon](https://anilist.co/staff/175381/) with [Kanon Takao](https://anilist.co/staff/132283/).
She changed her stage name from Koide to Kotama in April 2018.
