RUANN

Real name: Ruan Ooyama (大山 琉杏)

She learned guitar at the age of 11. Her first live was in New York.
She appeared in Kanjani no Shiwake 8, where she covered Lady Gaga's "Telephone" in 2013.
She performed One Piece Kabuki Theme TETOTE in 2015.
She was praised by Taka of ONE OK ROCK and was invited to perform in their live.
She performed I AM STANDING, which used as 3-gatsu wa Lion 2nd Season ED and There's No Ending, which used as Koukyoushihen Eureka Seven Hi-Evolution 2: Anemone Theme in 2018.
She major debuted in Toys Factory in 2018, however, she went hiatus one year later.
She released digital single BEEP BEEP in Japan and Korea, which made her debut in Korea, in 2019 as a freelance singer songwriter.
Her SNS accounts were deleted in 2020.
She participated in iCONZ, which airing on audition TV show ~Yume no Audition Variety~ Dreamer Z, as Ruan Ooyama. She placed in third and is now part of the new group Moonchild as RUAN. She is currently on hiatus due to physically unwell. She would concentrate on producing music after Moonchild has disbanded at the end of April 2024.

She is able to speak Japanese, English, Korean and Chinese.