Narumi Runa (成海瑠奈) is a voice actress and former member of SoundOrion.
She left the group and suspended all activities in October 2021 due to her poor physical health condition. 
- Hobbies/Skills: Watching anime/dramas, singing
- Qualifications: Cooking Test 1-kyu, Clothing Test 1-kyu
On October 10, an information of Runa allegedly cheating on her boyfriend was leaked to several social media sites. Said boyfriend was "Mokou", a Youtuber who she has been dating for 3 years.
Because of this, the fandom also created an infamous meme based on the ejaculation, which associates with Runa's cheating actions and her voiced character, Yuika Mitsumine from The IDOLM@STER: Shiny Colors.