Yukiko Okada (岡田有希子), born Kayo Sato (佐藤佳代) (August 22, 1967 – April 8, 1986 in Nagoya, Aichi Prefecture, Japan), known as Yukko to her fans, was a Japanese idol during the 1980s, signed to Pony Canyon records. She is still popular in spite of her death of more than 30 years ago.

In her beginning Okada went on many auditions for talents and singing. Finally she was accepted to Star Tanjou! on Nippon Television. In March 1983, she won the contest.

On April 21, 1984, Okada debuted with a single, "First Date". She was known as "Yukko" in the beginning of her career as a result of her mispronouncing her name, Yukiko, stemming from her nervousness on her first television appearance on "The Best Ten".

Okada won the Rookie of the Year-title on that same year, and was awarded from "the 26th Japan Record Awards, Grand Prix Best New Artist Award" for her 3rd single, "Dreaming Girl: Koi, Hajimemashite", at the end of her debut year. Her 1986 song "Lip Network" was written by Seiko Matsuda and was composed by Ryuichi Sakamoto. The single reached number one spot on the Oricon weekly single charts of February 10, 1986.

After achieving these success, a tragedy happened. At The Sun Music building, located in Yotsuya, Tokyo, around 10 o'clock April 8, 1986, 18 year old Okada was found with a slashed wrist in her gas-filled Tokyo apartment. Two hours later, Okada jumped to her death from the seven-story building. The reason for Okada's suicide is still unknown. Her fans were shocked and shattered by her untimely death. It resulted in many copycat incidents in Japan, soon christened with the neologism "Yukiko Syndrome" or "Yukko Syndrome." Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.