At the "1st SODstar Cinderella Audition" sponsored by SOD Create, she won the Grand Prix with 12,880 votes out of a total of 21,230 votes. She made her debut on November 5, 2009 with "The 1st Cinderella Audition Grand Prix Yukiko Suo AV Debut". She participated in the audition under the name "Yukiko" and changed the name to "Yukiko Suo" when she made her debut. The stage name comes from the combination of "snow" in hiragana and "-ko (child)", which is often used by women because it was born in December.