Kaoru Okunuki is a Japanese actress and narrator born in Tokyo on November 22, 1970. While she is primarily known for her extensive work in live-action television, film, and stage, she has also performed voice-over work for documentaries, video games, and certain animated and fantasy projects.

Okunuki began her entertainment career in the late 1980s. In 1986, she won the Young Jump Grand Prix using the name Kaoru Okuda, which served as her entry into the industry. The following year, she was selected through an Amuse talent recruitment campaign alongside future star Masaharu Fukuyama. She made her official debut in 1988 as a member of the nine-member idol group Angels. After an initial period of activity, she took a temporary break from the spotlight before returning to prominence through a well-received commercial for Clorets gum and as a host on the show Hanakin Data Rakuen.

Throughout the 1990s and 2000s, Okunuki established herself as a prolific supporting actress in Japanese television dramas and films. Her extensive television credits include roles in popular series such as Wataru Seken wa Oni Bakari, Aibou (Partners), Jyoou no Kyoushitsu (The Queen's Classroom), Kurosagi (The Black Swindler), Byakuyako, and Ryomaden. She has also appeared in several notable films, including the 1997 comedy Radio no Jikan (Welcome Back, Mr. McDonald) and Always: Sunset on Third Street. In a career spanning over three decades, she has been affiliated with several talent agencies, including Amuse, OZ Entertainment, and Ten Carat, and is currently represented by Quarter Tone.

Regarding the specific voice roles you mentioned, Okunuki is confirmed to have played the character Aiko Hazuki in the 2000 horror film Ring Ø: Birthday. This film is a prequel to the famous Ring series and depicts the origins of the character Sadako Yamamura. However, information regarding an anime voice role for a character named Yuriko in the series Dragon Head is not documented in the available search results. While Okunuki has performed voice work, including as a narrator for documentaries and a role in the video game Lost Odyssey, her primary focus and most documented credits are in live-action acting. Therefore, her professional profile is that of a screen and stage actress who has occasionally lent her talents to voice-over and narration work.