Name: 谷留美子 (Rumiko Tani)
Stage names: 三佳千夏 (Miyoshi Chinatsu), 谷ルミコ (Rumiko Tani)
Date of birth: August 14th, 1979
Place of birth: Tokyo, Japan

Date of debut: October 4th, 1999 (Member #22)
Graduated: October 2000

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Rumiko Tani (from now on referred to as Chinatsu Miyoshi) was a singer and actress, and is now a talento in South Korea.

History

Miyoshi Chinatsu entered the 1st Morning Musume & Heike Michiyo Protegee Audition in February 1999 as one of over 3000 girls, and became the winner. She was given a solo career within Hello!Project, next to Yuko Nakazawa and Michiyo Heike. But while Nakazawa released enka and Heike pop/rock, Chinatsu released up-beat ballads.

Makoto from Sharan Q (a colleague of Tsunku) gave her her stage name. Her long legs became a big part of her image and was a trademark of hers. 

She released her first single in august 1999, entitled Unchain my heart. On the same date as the release of her single, Hello! Project had a live concert TV broadcasted, where Chinatsu made her debut on stage. The single never entered the charts, but despite this she released two more singles. 

Love, Yes I do was released a few months later, in november. The song was used as the first ending theme for the anime Majutsushi Orphen: Revenge. The song also made it onto two compilation albums for the anime. 

Anata no Shirt to Love Song was released in May the following year. The lyrics for this song was written by Chinatsu herself. These two singles were also unsuccesfull entering the charts.

In 1999 a Tv show called THE GARAGE was shown on TV Tokyo.Each month the show featured a different song as it’s theme song, and it was sung by different members of Hello! Project. A music video was made for each theme song, and Chinatsu was featured in Tunnel Tengoku (for February), and Blue Chateu (for March). Four CD singles containing all the theme songs were also released, and Chinatsu is featured on vol 4.

She participated in all the concerts Hello! Project held in 1999 and 2000, but she was never in the shuffles arranged by Tsunku (where he would mix all the girls in his management into temporary groups to hold a «who can sell the most singles in a new group-competition). This was because her manager was Kaoru Sanada (who also produced her singles) and not Tsunku.

She also appeared on the tv shows «Idol wo Sagase» and «Hello! Morning», and starred in the H!P movie Pinch Runner alongside Morning Musume.

In September 2000, Chinatsu appeared in what would be her last concert. The official reason for her departure was that she would like to look at herself objectively and have more variety of experience. The real reason was that she was dismissed due to monetary issues with the office. (She was the former lover of the person who was in the office, or the lover of someone who had the trouble with the office).

When UFA updated their artists and discography section in 2014/2015, Miyoshi's discography was omitted for unknown reasons.

There has been some rumors asking if Chinatsu is really Japanese, and what her real name is. The Japanese wikipedia says that 千木留美子 (Rumiko Chigi) is her real name (could be her birth name which she later changed), but in one of her twitters she posted a picture of her Japanese passport (to prove her citizenship) which stated her name as 谷留美子 (Rumiko Tani).

After being absent from show business for five years, Chinatsu re-entered the music scene in 2005 when she contributed to a soundtrack to a horror movie called «Ouija Board». She had now changed her name to Rumiko Tani, being both a solo artist and in a band called march. The band is made up of Chinatsu and another Korean artist. There haven’t been any music released by march or Chinatsu since this.

The following year she married Korean singer Kim Jun Min. She is now taking care of her three kids and is passionate about cooking.