(born February 4, 1966) is a Japanese singer and actress. She is signed to Victor Entertainment.
Career
In 1981, Kyoko Koizumi participated in and won the Star Tanjo! programme and released her first single in March 1982. She obtained several number one hits on the Oricon charts in 1984: "Nagisa no Haikara Ningyo / Kaze no Magical", "Yamato Nadeshiko Shichi Henge" and "The Stardust Memory", the latter holding the top spot over the end of 1984 and the beginning of 1985, and thereafter established herself as one of Japan's most popular pop idols, alongside rivals Seiko Matsuda and Akina Nakamori.
Her biggest hit (あなたに会えてよかった) came in 1991, which sold more than a million copies in Japan alone. Koizumi went on to release another single (優しい雨) which also sold over a million copies in 1993.
Koizumi had singles reach the Top Ten for 12 consecutive years between 1983 and 1994, a female solo artist record, until this was broken by Namie Amuro. In the 1990s, she released a few dance remixes on vinyl only under the Koizumix Production moniker. She has worked with Yoko Kanno who composed the music for Koizumi's 1996 album, Otoko no Ko Onna no Ko. She had her first hit single in 18 years when her version of the song "Shiosai no Memorī" from the 2013 NHK morning television drama Amachan, in which Koizumi also acted, reached number 2 on the Oricon Singles Chart. With that, Koizumi made her 6th appearance (as a special guest performer) in the annual Red and White Song Festival, having previously participated from 1984 to 1988.
From mid-90s onward, Koizumi shifted her focus onto acting. As an actress, she played in numerous dramas and movies, most notably, she was cast in two of the most successful movies in Japan ever: as the serial killer in Bayside Shakedown: The Movie (1998) and as the witch in Onmyoji (2001).
She starred in Toshiaki Toyoda's 2006 film Hanging Garden and Kiyoshi Kurosawa's 2008 film Tokyo Sonata. She starred in Kurosawa's 2012 television drama Penance.
Koizumi was given the Best Actress award at the 1989 Yokohama Film Festival for her work in the film Kaito Ruby. She won the award for best actress at the 26th Hochi Film Awards for Kaza Hana. She also won the award for Best Actress at the 66th Mainichi Film Awards for Mainichi Kaasan.
She featured in the French-Japanese film, Umami, directed by Slony Sow and starring Gérard Depardieu, which was filmed in Hokkaido, Japan and Saumur, France.
In 2025, she hosts the Netflix-original dating reality show Offline Love alongside Takahira Kuruma and Kemuri Matsui of the comedy duo Reiwa Roman.
Personal life
She married actor Masatoshi Nagase in 1995, the couple divorced in 2004.
Discography
As of 2023, Koizumi released 27 original albums, 22 compilation albums, 40 physical singles, 10 digital singles and 17 home-videos.
Singles
{| class="wikitable plainrowheaders" style="text-align:center;"
|+ List of singles, with selected chart positions
|-
! scope="col" rowspan="2"| Year
! scope="col" rowspan="2"| Single
! scope="col" rowspan="1"| Peak chart positions
! scope="col" rowspan="2"| Formats
|-
! scope="col" style="width:2.5em;font-size:85%;"| JPN<br>Physical<br>
|-
|rowspan="3"|1982
|style="text-align:left;"|"Watashi no 16sai"<br>（私の16才）
| 22
| CD, LP, Cassette
|-
|style="text-align:left;"|"Sutekina Lovely Boy"<br>（素敵なラブリーボーイ）
| 19
| CD, LP, Cassette
|-
|style="text-align:left;"|"Hitori Machikado"<br>（ひとり街角）
| 13
| CD, LP, Cassette
|-
|rowspan="4"|1983
|style="text-align:left;"|"Harukaze no Yuwaku"<br>（春風の誘惑）
| 10
| CD, LP, Cassette
|-
|style="text-align:left;"|"Makkana Onnanoko"<br>（まっ赤な女の子）
| 8
| CD, LP, Cassette
|-
|style="text-align:left;"|"Hanbun Shojo"<br>（半分少女）
| 4
| CD, LP, Cassette
|-
|style="text-align:left;"|"Ade Sugata Namida Musume"<br>（艶姿ナミダ娘）
| 3
| CD, LP, Cassette
|-
|rowspan="5"|1984
|style="text-align:left;"|"Climax Goisshoni"<br>（クライマックス御一緒に）
| 4
| CD, LP, Cassette
|-
|style="text-align:left;"|"Nagisa no Haikara Ningyo"<br>（渚のはいから人魚）
| 1
| CD, LP, Cassette
|-
|style="text-align:left;"|"Meikyuu no Endroller"<br>（迷宮のアンドローラ）
| 1
| CD, LP, Cassette
|-
|style="text-align:left;"|"Yamato Nadeshiko Nana Henka"<br>（ヤマトナデシコ七変化）
| 1
| CD, LP, Cassette
|-
|style="text-align:left;"|"Stardust Memory"<br>
| 1
| CD, LP, Cassette
|-
|rowspan="4"|1985
|style="text-align:left;"|"Toko Natsu Musume"<br>（常夏娘）
| 1
| CD, LP, Cassette
|-
|style="text-align:left;"|"Heartbreaker"<br>（ハートブレイカー）
| 6
| CD, LP, Cassette
|-
|style="text-align:left;"|"Majo"<br>（魔女）
| 1
| CD, LP, Cassette
|-
|style="text-align:left;"|"Nantettatte Idol"<br>（なんてったってアイドル）
| 1
| CD, LP, Cassette
|-
|rowspan="3"|1986
|style="text-align:left;"|"100% Danjo Kousai"<br>（100%男女交際）
| 2
| CD, LP, Cassette
|-
|style="text-align:left;"|"Yoake no Mew"<br>（夜明けのMEW）
| 2
| CD, LP, Cassette
|-
|style="text-align:left;"|"Kogarashi ni Dakarete"<br>（木枯しに抱かれて）
| 3
| CD, LP, Cassette
|-
|rowspan="3"|1987
|style="text-align:left;"|"Mizu no Rouge"<br>（水のルージュ）
| 1
| CD, LP, Cassette
|-
|style="text-align:left;"|"Smile Again"<br>
| 2
| CD, LP, Cassette
|-
|style="text-align:left;"|"Kiss wo Tomenaide"<br> (キスを止めないで)
| 1
| CD, LP, Cassette
|-
|rowspan="2"|1988
|style="text-align:left;"|"GOOD MORNING-CALL"<br>
| 2
| CD, LP, Cassette
|-
|style="text-align:left;"|"Kaito Ruby"<br> (快盗ルビイ)
| 2
| CD, LP, Cassette
|-
|rowspan="2"|1989
|style="text-align:left;"|"Fade Out"<br>
| 2
| CD, LP, Cassette
|-
|style="text-align:left;"|"Gakuen Tengoku"<br> (学園天国)
| 2
| CD, LP, Cassette
|-
|rowspan="3"|1990
|style="text-align:left;"|"Minogashitekure yo"<br> (見逃してくれよ!)
| 1
| CD, Cassette
|-
|style="text-align:left;"|"La La La…"<br>
| 10
| CD, Cassette
|-
|style="text-align:left;"|"Oka wo Koete"<br> (丘を越えて)
| 10
| CD, Cassette
|-
|rowspan="1"|1991
|style="text-align:left;"|"Anata ni Aete Yokatta"<br> (あなたに会えてよかった)
| 1
| CD, Cassette
|-
|rowspan="1"|1992
|style="text-align:left;"|"Jibun wo Mitsumete"<br> (自分を見つめて)
| 4
| CD, Cassette
|-
|rowspan="1"|1993
|style="text-align:left;"|"Yasashii Ame"<br> (優しい雨)
| 2
| CD
|-
|rowspan="2"|1994
|style="text-align:left;"|"My Sweet Home"<br>
| 4
| CD
|-
|style="text-align:left;"|"Tsuki Hitoshizuku"<br> (月ひとしずく)
| 7
| CD
|-
|rowspan="1"|1995
|style="text-align:left;"|"BEAUTIFUL GIRLS"<br>
| 14
| CD
|-
|rowspan="1"|1996
|style="text-align:left;"|"Otokonoko Onnanoko"<br> (オトコのコ オンナのコ)
| 19
| CD
|-
|rowspan="1"|1998
|style="text-align:left;"|"Nobody can, but you"<br>
| 78
| CD
|-
|rowspan="1"|1999
|style="text-align:left;"|"for my life"<br>
| 33
| CD
|-
|rowspan="1"|2013
|style="text-align:left;"|"Shiosai no Memory"<br> (潮騒のメモリー)
| 2
| CD
|-
|rowspan="1"|2014
|style="text-align:left;"|"T Jiro"<br> (T字路)
| 14
| CD
|-
|}
Digital singles
{| class="wikitable plainrowheaders" style="text-align:center;"
|+ List of digital single, with referenced links
|-
! scope="col"| Year
! scope="col"| Single
! scope="col"| Reference
|-
|rowspan="1"|2005
|style="text-align:left;"|"Atashinchi no Uta"<br>
|
|-
|rowspan="1"|2008
|style="text-align:left;"|"Innocent Love"<br>
|
|-
|rowspan="1"|2009
|style="text-align:left;"|"Niji ga Kiers made"<br>
|
|-
|rowspan="4"|2011
|style="text-align:left;"|"Uchi e Kaerou"<br>
|
|-
|style="text-align:left;"|"Innocent Love (FPM 4/4 DUB MIX)"<br>
|
|-
|style="text-align:left;"|"Sankagetsu Stretch: Sesuji nobashi-hen "<br>
|
|-
|style="text-align:left;"|"Sankagetsu Stretch: Koshi hogushi-hen "<br>
|
|-
|rowspan="1"|2012
|style="text-align:left;"|"100%"<br>
|
|-
|rowspan="1"|2022
|style="text-align:left;"|"Natsu no Time Machine 1982-2022"<br>
|
|-
|}
Studio albums
{| class="wikitable plainrowheaders" style="text-align:center;"
|+ List of albums, with selected chart positions
|-
! style="width:15em;" rowspan="2"| Title
! style="width:18em;" rowspan="2"| Album details
! colspan="1"| Peak positions
|-
!style="width:3em;font-size:85%"|JPN<br />Oricon<br/>
|-
|rowspan="1"|2012
|style="text-align:left;"|"Kyon30 extra"<br>
|
|-
|rowspan="1"|2013
|style="text-align:left;"|"KP20: 89-08 RARE & MORE COLLECTION"<br>
|
|-
|rowspan="1"|2022
|style="text-align:left;"|"KOIZUMI 3D"<br>
|
|-
|}
Home video
{| class="wikitable plainrowheaders" style="text-align:center;"
|+ List of albums, with selected chart positions
|-
! style="width:15em;" rowspan="2"| Title
! style="width:18em;" rowspan="2"| Album details
! colspan="1"| Peak positions
|-
!style="width:3em;font-size:85%"|JPN<br />Oricon<br/>
- Mother Water (2010)
- Bayside Shakedown 3: Set the Guys Loose (2010), Manami Hyuga
- Mainichi Kaasan (2011)
- Kako: My Sullen Past (2016)
- Before We Vanish (2017)
- Eating Women (2018), Atsuko
- Umami (2022), Taya
- Plastic (2023)
- Silence of the Sea (2024), Anna Tamura
- Bushido (2024)
- Belonging (2024)
- I Ai (2024)
- Shinji Muroi: Not Defeated (2024), Manami Hyuga
- Yell (2026)
Television
- Toge no Gunzo (1982), Tsuru
- Ato wa Neru Dake (1983)
- Anmitsu Hime (1983)
- Shojo ni Nani ga Okotta ka (1985)
- Hanayome Ningo wa Nemuranai (1986)
- Aishiatteru Kai (1989)
- Ashita wa Atashi no Kaze ga Fuku (1989)
- Papa to Natchan (1991)
- Anata Dake Mienai (1992)
- Chance (1993)
- Aisuru to Iu Koto (1993)
- Boku ga Kanojo ni Shakkin wo Shita Riyu (1994)
- Mada Koi wa Hajimaranai (1995)
- Melody (1997)
- Kamisan Nanka Kowakunai (1998)
- Owari no Nai Dowa (1998)
- Renai Kekkon no Rule (1999)
- Koi wo Nannen Yasundemasu ka (2001)
- Shiritsu Tantei Hama Mike (2002)
- Kawa, Itsuka Umi e (2003)
- Manhattan Love Story (2003)
- Sensei no Kaban (2003)
- Suika (2003)
- Yasashii Jikan (2005)
- Sailor Suit and Machine Gun (2006)
- Hatachi no Koibito (2007)
- Second to Last Love (2012–25)
- Penance (2012)
- Amachan (2013), Haruko Amano
- Totto TV (2016), narrator
- Kangoku no Ohimesama (2017), Kayo Baba
- Idaten (2019), Mitsuko
- First Love (2022)
- Extremely Inappropriate! (2024), herself
- Offline Love (2025), herself as co-host