Chisato Okai

Biography

岡井千聖 (Okai Chisato) is a former Japanese pop singer. She is a former member of the group ℃-ute under Hello! Project. She is also a former member of Mellowquad and Triplet and leader of Team Okai. On May 1, 2020, she announced she had retired from the entertainment industry.

Known For

Hello! Project 2018 Summer ~OG Corner 1~ Hello! Project 20th Anniversary!!

Hello! Project 2018 Summer ~OG Corner 2~ Hello! Project 20th Anniversary!!

Hello! Project 2006 Winter ~Zeninshuu GO!~

Hello! Project 2007 Winter ~Shuuketsu! 10th Anniversary~

Nikenme Dou Suru? ~Tsumami no Hanashi~

Hello! Project Sports Festival 2003

Hello! Project 2004 Winter ~C'MON! Dance World~

℃-ute 2006 Cutie Circuit Final in YOMIURI LAND EAST LIVE ~9gatsu 10ka wa ℃-ute no Hi~

Filmography

Year	Movie	Role
2020	Petit Best 20 2020
2019	Hello! Project 2019 Winter ~YOU & I~ Hello! Project 20th Anniversary!!
2019	Hello! Project 2019 Winter ~NEW AGE~ Hello! Project 20th Anniversary!!
2018	Hello! Project 2018 Summer ~OG Corner 2~ Hello! Project 20th Anniversary!!
2018	Hello! Project 2018 Summer ~OG Corner 1~ Hello! Project 20th Anniversary!!
2017	Hello! Project 2017 Hina Fes ~℃-ute Premium~
2017	Hello! Project 2017 Hina Fes ~Morning Musume.'17 Premium~
2017	Hello! Project 2017 Hina Fes ~ANGERME & Juice=Juice Premium~
2017	Hello! Project 2017 Hina Fes ~Tsugunaga Momoko Premium~
2017	℃-ute 2017 Summer Last Concert in Saitama Super Arena ~Thank you team ℃-ute~
2017	Petit Best 18
2016	Hello! Project 2016 COUNTDOWN PARTY 2016-2017 ~GOODBYE & HELLO!~
2016	Hello! Project 2016 Hina Fes ~℃-ute Premium~
2016	Hello! Project 2016 Summer ~Sunshine Parade~
2016	Hello! Project 2016 Summer ~Rainbow Carnival~
2016	Hello! Project 2016 Winter ~DANCING! SINGING! EXCITING!~
2016	Hello! Project DVD Magazine Vol.48
2016	Hello! Project DVD Magazine Vol.49
2016	Hello! Project DVD Magazine Vol.50
2016	Hello! Project DVD Magazine Vol.51
2016	Petit Best 17
2015	Hello! Project 2015 Summer ~CHALLENGER~
2015	Hello! Project 2015 Winter ~DANCE MODE!~
2015	Hello! Project 2015 COUNTDOWN PARTY 2015-2016 ~GOODBYE & HELLO!~
2015	Hello! Project 2015 Hina Fes ~Mankai! The Girls' Festival~ Morning Musume.'15 Premium
2015	Hello! Project 2015 Hina Fes ~Mankai! The Girls' Festival~ ANGERME & Juice=Juice Premium
2015	Hello! Project 2015 Hina Fes ~Mankai! The Girls' Festival~ ℃-ute Premium
2015	Hello! Project 2015 Summer ~DISCOVERY~
2015	Hello! Project 2015 Winter ~HAPPY EMOTION!~
2015	℃-ute 2015 Autumn ~℃an't STOP!!~
2015	℃-ute 2015 Autumn Cutie Circuit ~9gatsu 10ka wa ℃-ute no Hi~
2015	℃-ute 2015 Spring 9→10 Shuunen Kinen ~The Future Departure~
2015	Hello! Project DVD Magazine Vol.44
2015	Hello! Project DVD Magazine Vol.45
2015	Hello! Project DVD Magazine Vol.46
2015	Hello! Project DVD Magazine Vol.47
2015	Petit Best 16
2014	Hello! Project 2014 COUNTDOWN PARTY 2014-2015 ~GOODBYE & HELLO!~
2014	Hello! Project 2014 Hina Fes ~Full Course~ Main Dish wa ℃-ute Desu.
2014	Hello! Project 2014 Summer ~KOREZO!~
2014	Hello! Project 2014 Summer ~YAPPARI!~
2014	Hello! Project 2014 Winter ~GOiSU MODE~
2014	Hello! Project 2014 Winter ~DE-HA MiX~
2014	℃-ute 2014 Autumn (910) no Hi Special Concert ~Thank you BeriKyuu!~ in Nippon Budokan
2014	℃-ute 2014 Autumn ~Monster~
2014	℃-ute 2014 Spring ~℃-ute no Honne~
2014	Hello! Project DVD Magazine Vol.40
2014	Hello! Project DVD Magazine Vol.41
2014	Hello! Project DVD Magazine Vol.42
2014	Hello! Project DVD Magazine Vol.43
2014	Petit Best 15
2014	S/mileage 2014 Summer LIVE FULL CHARGE ~715 Nippon Budokan~
2014	℃-ute Cutie Circuit ~First Trip to Taipei~
2013	Hello! Channel Vol.12 ~Tanaka Reina Sotsugyou Special!~
2013	Hello! Project 2013 Spring Haru no Dai Kansha Hinamatsuri Festival 2013 ～Berryz Koubou 10 Nenme Totsunyuu Special!～
2013	Hello! Project 2013 Spring Yaon Premium LIVE ~Soto Fes~
2013	Hello! Project 2013 COUNTDOWN PARTY 2013-2014 ~GOODBYE & HELLO!~
2013	Hello! Project 2013 Summer COOL HELLO! ~Sorezoore!~
2013	Hello! Project 2013 Summer COOL HELLO! ~Mazekooze!~
2013	Hello! Project 2013 Winter Tanjou 15 Shuunen Kinen Live 2013 Fuyu ~VIVA!~
2013	Hello! Project 2013 Winter Tanjou 15 Shuunen Kinen Live 2013 Fuyu ~BRAVO!~
2013	Hello! Project 2013 Spring Haru no Dai Kansha Hinamatsuri Festival 2013 ~Thank You For Your Love!~
2013	℃-ute 2012~2013 Winter ~Shinseinaru Pentagram~
2013	℃-ute 2013 Autumn"Queen of J-POP ~Tadoritsuita Onna Senshi~" in Budokan
2013	℃-ute 2013 Spring ~Treasure Box~
2013	Hello! Project DVD Magazine Vol.34
2013	Hello! Project DVD Magazine Vol.35
2013	Hello! Project DVD Magazine Vol.36
2013	Hello! Project DVD Magazine Vol.38
2013	Hello! Project DVD Magazine Vol.37
2013	Hello! Project DVD Magazine Vol.39
2013	Petit Best 14
2012	Hello! Channel Vol.11 ~2013nen Shinshun Tokudaigou Mano Erina Sotsugyou Special!~
2012	Hello! Channel Vol.10 ~Tabi wo Shichaimashita! Special~
2012	Hello! Channel Vol.9
2012	Hello! Channel Vol.8
2012	Hello! Project 2012 Summer Tanjou 15 Shuunen Kinen Live 2012 Natsu ~Ktkr (Kitakore) Natsu no Fan Matsuri!~
2012	Hello! Project 2012 Summer Tanjou 15 Shuunen Kinen Live 2012 Natsu ~Wkwk (Wakuwaku) Natsu no FAN Matsuri!~
2012	Hello! Project 2012 Winter Hello☆Pro Tengoku ~Rock-chan~
2012	Hello! Project 2012 Winter Hello☆Pro Tengoku ~Funky-chan~
2012	℃-ute 2012 Spring-Summer ~Utsukushikutte Gomen ne~
2012	Hello! Project DVD Magazine Vol.28
2012	Hello! Project DVD Magazine Vol.30
2012	Hello! Project DVD Magazine Vol.31
2012	Hello! Project DVD Magazine Vol.32
2012	Hello! Project DVD Magazine Vol.33
2012	Petit Best 13
2012	℃-ute 2012 Cutie Circuit ~9gatsu 10ka wa ℃-ute no Hi~
2011	Ring of Curse	Chikako's Sister
2011	Zomvideo
2011	Hello! Channel Vol.7
2011	Hello! Channel Vol.6
2011	Hello! Channel Vol.5
2011	Hello! Channel Vol.4
2011	Ousama Game	Kaori Maruoka
2011	℃-ute Zen Single MUSIC VIDEO Blu-ray File 2011
2011	Hello! Project 2011 Autumn Hello! Project ☆ Festival 2011 ~MOBEKIMASU~
2011	Hello! Project 2011 Summer ~Nippon no Mirai wa WOW WOW Live~
2011	Hello! Project 2011 Summer ~Nippon no Mirai wa YEAH YEAH Live~
2011	Hello! Project 2011 Winter ~Kangei Shinsen Matsuri~ A gana Live
2011	Hello! Project 2011 Winter ~Kangei Shinsen Matsuri~ B kkuri Live
2011	Hello Pro! TIME Vol.5
2011	℃-ute 2011 Spring 'Chou! Chou Wonderful Tour'
2011	Hello! Project DVD Magazine Vol.23
2011	Hello! Project DVD Magazine Vol.24
2011	Hello! Project DVD Magazine Vol.25
2011	Hello! Project DVD Magazine Vol.26
2011	Hello! Project DVD Magazine Vol.27
2011	Petit Best 12
2010	Hello! Channel Vol.3
2010	Hello! Channel Vol.2
2010	Hello! Channel Vol.1
2010	Hello! Project 2010 Summer ~Fankora!~
2010	Hello! Project 2010 Winter Kachou Fuugetsu ~Mobekimasu!~
2010	Hello! Project 2010 Winter Kachou Fuugetsu ~Shuffle Date~
2010	℃-ute 2010 Spring ~Shocking LIVE~
2010	℃-ute 2010 Summer-Autumn ~Dance Special!! 'Chou Uranaito!!'~
2010	Hello! Project DVD Magazine Vol.20
2010	Hello! Project DVD Magazine Vol.21
2010	Hello! Project DVD Magazine Vol.22
2010	Petit Best 11
2009	℃-ute コンサートツアー 2009 春〜 A B ℃ 〜
2009	℃-uteコンサートツアー2009夏秋〜キューティーJUMP！〜
2009	Hello! Project 2009 Summer Kakumei Gannen ~Hello! Chanpuru~
2009	Hello! Project 2009 Winter Kettei! Hello☆Pro Award '09 ~Backstage Video~
2009	Hello! Project 2009 Winter Kettei! Hello☆Pro Award '09 ~Elder Club Sotsugyou Kinen Special~
2009	Hello! Project 2009 Winter Wonderful Hearts Kouen ~Kakumei Gannen~
2009	Hello! Project DVD Magazine Vol.16
2009	Hello! Project DVD Magazine Vol.18
2009	Hello! Project DVD Magazine Vol.19
2009	Petit Best 10
2009	℃-ute 2009 Cutie Circuit ~9gatsu 10ka wa ℃-ute no Hi~
2008	Berryz Kobo & ℃-ute Nakayoshi Battle Concert Tour 2008 Haru ~Berryz Kamen vs Cutie Ranger~
2008	℃-uteコンサートツアー2008夏〜忘れたくない夏〜
2008	℃-ute Cutie Circuit 2008〜9月10日は℃-uteの日〜
2008	Hello! Project 2008 Summer Wonderful Hearts Kouen ~Hishochi de Date Itashima SHOW~
2008	Hello! Project 2008 Winter ~Kettei! Hello☆Pro Award '08~
2008	Hello! Project 2008 Winter ~Wonderful Hearts Nenjuu Mukyuu~
2008	Hello! Project 2008 Winter ~Live DVD Box Bonus Video~
2008	Hello! Project DVD Magazine Vol.12
2008	Hello! Project DVD Magazine Vol.14
2008	Hello! Project DVD Magazine Vol.15
2008	Petit Best 9
2007	℃-ute デビュー単独コンサート 2007 春〜始まったよ! キューティーショー〜
2007	Cutie Circuit 2007 〜9月10日は℃-uteの日〜
2007	℃-ute ライブツアー2007秋〜放課後のエッセンス〜
2007	Hello! Project 2007 Winter ~Shuuketsu! 10th Anniversary~
2007	Hello! Project 2007 Winter ~Wonderful Hearts Otome Gocoro~
2007	Hello! Project 2007 Winter ~Live DVD Box Bonus Video~
2007	Hello! Project 2007 Summer 10th Anniversary Dai Kanshasai ~Hello☆Pro Natsu Matsuri~
2007	Hello! Project DVD Magazine Vol.8
2007	Hello! Project DVD Magazine Vol.10
2007	Hello! Project DVD Magazine Vol.11
2007	Petit Best 8
2007	℃-ute 2007 Spring ~Golden Hatsu Date~
2006	Hello! Project 2006 Summer ~Wonderful Hearts Land~
2006	Hello! Project DVD Magazine Vol.4
2006	Hello! Project DVD Magazine Vol.6
2006	Hello! Project DVD Magazine Vol.7
2006	Hello! Project 2006 Winter ~Zeninshuu GO!~
2006	Hello! Project 2006 Winter ~Wonderful Hearts~
2006	Petit Best 7
2006	℃-ute 2006 Cutie Circuit Final in YOMIURI LAND EAST LIVE ~9gatsu 10ka wa ℃-ute no Hi~
2006	Hello! Project Sports Festival 2006 Solo Okai Chisato
2005	Hello! Project 2005 Summer no Kayou Show ~'05 Selection! Collection!~
2005	Hello! Project 2005 Winter ~A HAPPY NEW POWER! Akagumi~
2005	Hello! Project 2005 Winter All-Stars Dairanbu ~A HAPPY NEW POWER! Iida Kaori Sotsugyou Special~
2005	Hello! Project DVD Magazine Vol.2
2005	Hello! Project DVD Magazine Vol.3
2004	Hello! Project 2004 Summer ~Natsu no Doon!~
2004	Hello! Project 2004 Winter ~C'MON! Dance World~
2004	Yaguchi Mari to iku! ℃-ute chotto 1-kyoku kiite kudasai! Vol.1
2004	Hello! Project DVD Magazine Vol.1
2004	Hello! Project Sports Festival 2004
2004	Yaguchi Mari to iku! ℃-ute chotto 1-kyoku kiite kudasai! Vol.2
2003	Hello! Morning Haromoni Gekijou Vol.4 "Hirusagari no Moomamatachi & Bus ga Kuru Made"
2003	Hello! Project 2003 Summer ~Yossha! Bikkuri Summer!!~
2003	Hello! Project 2003 Winter ~Tanoshin Jattemasu!~
2003	Hello! Project Sports Festival 2003
2003	Koinu Dan no Monogatari - Making Of
2002	Hello! Project 2002 Summer ~ONE HAPPY SUMMER DAY~
2002	The Story of Dan the Puppy

Year	TV Show	Role
2018	いきなりマリッジ
2017	Nikenme Dou Suru? ~Tsumami no Hanashi~
2012	Suugaku ♥ Joshi Gakuen
2010	Bijo Gaku
2008	Yorosen!
1996	Utaban
	Hello Pro! TIME
	P-sma
	HEY!HEY!HEY! MUSIC CHAMP
	Ustream Musume
	MUSIC JAPAN