Editing Okai Chisato

{{tabs
|tab1=Okai Chisato
|tab2=Discography
|tab3=Publications
|tab4=Concerts & Events
|tab5=Gallery
|tab6=Family
}}
{{Member Infobox
|name       = Okai Chisato
|jpname		= {{Kana|岡井|おかい}}{{Kana|千聖|ちさと}}
|image		= A7f6b0b807ced0dd43117fbeb86e4ec4f04c305c.jpg
|caption	= Okai Chisato, May 2018
|nickname	= Chissaa (ちっさー)<br>Okai-chan (岡井ちゃん)<br>Chisato (ちさと)
|birthdate	= {{Birthday|1994|06|21}}
|origin 	= Tokorozawa, {{residence|Saitama|Japan}}
|bloodtype	= A
|zodiac		= {{Zodiac|06|21}}<br />{{Lunar|1994|06|21}}
|height		= {{Height|152}}
|genre		= J-Pop
|occupation	= Idol, Singer, Actress, Model
|active		= 2002-2020<br>(17 years)
|agency		= {{ufg|UP-FRONT AGENCY}} (2002-2012)<br>{{ufg|UP-FRONT PROMOTION}} (2012-2017)<br>{{ufg|J.P ROOM}} (2017-2020)
|label      = [[zetima]] (2002-2017)<br>{{ufg|UP-FRONT WORKS}}
|group		= ℃-ute
|mcolor    = {{penlight|green|10}} Green <small>(2010-2017)</small><br>{{penlight|blue|10}} Blue <small>(2006-2009)</small>
|join      = June 11, 2005
|graduate  = June 12, 2017
|days      = {{AgeinYMD|2005|06|11|2017|06|12}}
|debutsingle = [[Massara Blue Jeans]]
|lastsingle = [[To Tomorrow / Final Squall / The Curtain Rises]]
|acts		= [[℃-ute]], [[Hello! Project Kids]], [[Athena & Robikerottsu]], [[Tanpopo#]], [[Mellowquad]], [[Triplet]], [[H.P. All Stars]], [[Ganbarou Nippon Ai wa Katsu Singers]], [[Hello! Project Mobekimasu|Mobekimasu]], [[Team Okai]], [[Stelladrop]], [[Okappy]]
|blog		= {{BlogLink|ameblo|chisato-okai-official|Okai Chisato Official Blog}}
|autograph  = Okaiofficialautograph.png
}}'''Okai Chisato''' (岡井千聖) 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.<ref name="retired"/>

==Biography==
[[File:D0bf8f0b6aa394c45609010024d69ba33ce000a0.jpg|thumb|Okai Chisato, [[Oolong Hai no Onna|November 2017]]]]
[[File:OkailastAlbum.jpg|thumb|Okai Chisato, [[℃OMPLETE SINGLE COLLECTION|May 2017]]]]
[[File:Okailastsingle.jpg|thumb|Okai Chisato, [[To Tomorrow / Final Squall / The Curtain Rises|March 2017]]]]
[[File:profilefront-okaichisato-20161019.jpg|thumb|Okai Chisato, [[Mugen Climax / Ai wa Maru de Seidenki / Singing ~Ano Koro no You ni~|November 2016]]]]
[[File:OkaiChisato-JinseiwaSTEP.jpg|thumb|Okai Chisato, [[Naze Hito wa Arasoun Darou? / Summer Wind / Jinsei wa STEP!|April 2016]]]]
[[File:Okai-28thArigatou(Close).jpg|thumb|Okai Chisato, [[Arigatou ~Mugen no Yell~ / Arashi wo Okosunda Exciting Fight!|October 2015]]]]
[[File:1a6d97684cc9759b8409a0f72aea321d3452faa0.jpg|thumb|Okai Chisato, [[The Middle Management ~Josei Chuukan Kanrishoku~ / Gamusha LIFE / Tsugi no Kado wo Magare|April 2015]]]]
[[File:Okaimissyou1.jpg|thumb|Okai Chisato, [[I miss you / THE FUTURE|November 2014]]]]
[[File:Ocp.jpg|thumb|Okai Chisato, [[The Power / Kanashiki Heaven (Single Version)|July 2014]]]]
[[File:Okai 01 img-kokoro.jpg|thumb|Okai Chisato, [[Kokoro no Sakebi wo Uta ni Shitemita / Love take it all|March 2014]]]]
[[File:Okaitokaino.jpg|thumb|Okai Chisato, [[Tokai no Hitorigurashi / Aitte Motto Zanshin|November 2013]]]]
[[File:Jpopchisato.jpg|thumb|Okai Chisato, [[⑧ Queen of J-POP|September 2013]]]]
[[File:Okaic.jpg|thumb|Okai Chisato, [[Kanashiki Amefuri / Adam to Eve no Dilemma|July 2013]]]]
[[File:CKNOCHISATO1.jpg|thumb|Okai Chisato , [[Crazy Kanzen na Otona|April 2013]]]]
[[File:KMCHISATO1.jpg|thumb|Okai Chisato, [[Kono Machi|February 2013]]]]
[[File:2SHISENNARUCHISATO1.jpg|thumb|Okai Chisato, [[② ℃-ute Shinsei Naru Best Album|November 2012]]]]
[[File:Okai_AAAN_1.jpg|thumb|Okai Chisato, [[Aitai Aitai Aitai na|September 2012]]]]
[[File:OkaiKimiwaPromo.jpg|thumb|Okai Chisato, [[Kimi wa Jitensha Watashi wa Densha de Kitaku|April 2012]]]]
[[File:CUTECHISATO1.jpg|thumb|Okai Chisato, [[Dai Nana Shou「Utsukushikutte Gomen Ne」|January 2012]]]]
[[File:okai-chisato-4.jpg|thumb|Okai Chisato, [[Amazuppai Haru ni Sakura Saku|November 2011]]]]
[[File:okai-chisato44.jpg|thumb|Okai Chisato, [[Sekaiichi HAPPY na Onna no Ko|September 2011]]]]
[[File:Okaiimg.jpg|thumb|Okai Chisato, [[Momoiro Sparkling|May 2011]]]]
[[File:Okai_01_img6.jpg|thumb|Okai Chisato, [[Chou WONDERFUL! ⑥|April 2011]]]]
[[File:Okai_01_img_(2).jpg|thumb|Okai Chisato, [[Kiss me Aishiteru|February 2011]]]]
[[File:Okai_01_Aitai.jpg|thumb|Okai Chisato, [[Aitai Lonely Christmas|December 2010]]]]
[[File:Chisato_DdBpng.jpg|thumb|Okai Chisato, [[Dance de Bakoon!|August 2010]]]]
[[File:Okai_01_img.jpg|thumb|Okai Chisato, [[Campus Life ~Umarete Kite Yokatta~|April 2010]]]]
[[File:OkaiShocking5.jpg|thumb|Okai Chisato, [[Shocking 5|February 2010]]]]
[[File:OkaiChisato 2009.jpg|thumb|Okai Chisato, [[SHOCK!|January 2010]]]]

===Early Life===
Okai Chisato was born on June 21, 1994 in Tokorozawa, Saitama, Japan to [[Okai Chisato/Family#Okai Ken|Okai Ken]] and [[Okai Chisato/Family#Okai Hitomi|Hitomi]].

===2002-2005===
Okai first joined Hello! Project on June 30, 2002 as one of the fifteen children chosen from the [[Hello! Project Kids]] auditions.<ref name="hpkidshm">''[[Hello! Morning]]''. Broadcast Date: 2002-06-30.</ref>

In 2004 [[Berryz Koubou]] was formed, with the intention of rotating the kids throughout the unit.<ref>Tsunku. "[http://www.tsunku.net/officialcommentdetail.php?@DB_ID@=13 『Berryz工房』（ベリーズこうぼう）誕生について]" (in Japanese). Tsunku Official Website. 2003-01-15.</ref> Okai didn't make the original pick, and the idea was eventually dropped.

The remaining kids ended up forming [[℃-ute]] in 2005.<ref>Tsunku. "[http://www.tsunku.net/officialcommentdetail.php?@DB_ID@=53 ℃-ute （キュート） に関して]" (in Japanese). Tsunku Official Website. 2005-06-11.</ref> The group didn't make its official debut until late in 2006, with their first major label single released in 2007.

===2007===
She was a member of [[Little Gatas]] until she was added to [[Gatas Brilhantes H.P.]]. She was also a part of the unit [[Athena & Robikerottsu]] consisting of Okai, [[Niigaki Risa]], [[Mitsui Aika]], and [[Nakajima Saki]] in 2007. They sang the opening and ending theme song for the anime ''Robby & Kerobby''.

===2009===
She was put in the revival unit for [[Tanpopo]] with [[Kamei Eri]], [[Mitsui Aika]], and [[ Kumai Yurina|Kumai Yurina]].

===2010===
A video of Okai covering the dance for [[Dance de Bakoon!]] was uploaded to ℃-ute's Official Youtube Channel. It achieved 100,000 views in 2 days; upon reaching 500,000 views, ℃-ute's new single [[Aitai Lonely Christmas]] was released in celebration.

From October 13 to 22, Okai starred in [[Akuma no Tsubuyaki]] with the other members of [[℃-ute]]

On November 27, Okai became the first member of ℃-ute to get her own single and a separate listing on iTunes. Before the year ended, she released two more songs on iTunes.

===2011===
On January 24, Okai released another song on iTunes. The Solo Live 2011 Vol.1 ~Kaisha de Odotte Mita!~ was also released. The CD contains two songs from her iTunes list, while the DVD has singing and dancing of 12 songs.

On July 4, Okai and [[Ishikawa Rika]] starred in a mini drama titled ''"Tokusou Shirei! Aichi Police"''. Okai also starred in a stage play featuring [[Nakajima Saki]], [[Miyamoto Karin]] and [[Kudo Haruka]]. titled ''1974 Ikunayo.''

===2012===
On April 18, it was announced that Okai, [[Mano Erina]], [[Yajima Maimi]], and [[Suzuki Airi]] will star in a new stage play titled ''Theatre in the Round''. The stage play ran from May 15-17.

===2013===
On March 2, at [[Hello! Project Haru no Dai Kansha Hinamatsuri Festival 2013|SATOYAMA e Ikou! ~Forest For Rest~]], Okai was announced a member of the new [[SATOUMI movement]] unit, [[Mellowquad]], along with [[℃-ute]] member [[Yajima Maimi]] and [[Berryz Koubou]] members [[Tokunaga Chinami]] and [[Natsuyaki Miyabi]].

On April 1, it was announced Okai would have a regular Thursday segment on CBC’s ''Go Go Smile''.
===2014===
On March 13, it was announced that Okai would be a member of a newly formed SATOYAMA movement unit called [[Triplet]], alongside [[Kudo Haruka]] and [[Takagi Sayuki]].

On March 26, it was announced Okai would be a regular on the TV show ''Haraichi no Kami Appli''.

On June 21, Okai celebrated her 20th birthday at a special event called ℃-ute ~Okai Chisato Birthday Event 2014~. The event featured two performances in Tokyo.

===2015===
On June 20 and 21, Okai celebrated her birthday in a special fan club tour called [[Cutie Kankousha Fanclub Tour "Okai Chisato Birthday Party" in Nagano]].

On July 24, it was announced that Okai Chisato would be a regular on TV Tokyo's ''Chou Shiritoriaru''.<ref>http://natalie.mu/owarai/news/154763</ref> The show ran from August 3 to August 24.

On August 13, Chisato appeared on the TV show ''VS Arashi'' as part of "Team Saitama".<ref>"[http://ameblo.jp/c-ute-official/entry-12051498106.html VS嵐♡岡井千聖]" (in Japanese). ℃-ute Official Blog. 2015-07-17.</ref>

===2016===
On May 29, Okai announced that she would undergo surgery for vocal cord nodules after her birthday, and would have limited activities for a short period after the surgery.<ref>"[http://ameblo.jp/c-ute-official/entry-12165111674.html ご報告です。岡井千聖]" (in Japanese).  ℃-ute Official Blog. 2016-05-29.</ref><ref>"[http://www.helloproject.com/news/5152/ ℃-ute 岡井千聖に関して]" (in Japanese). Hello! Project. 2016-05-28.</ref>

On June 22, Okai celebrated her 22nd birthday at a fanclub event called [[℃-ute Okai Chisato Birthday Event 2016]], featuring one performance at Differ Ariake.

On July 7, she announced on her blog that the surgery was successful.<ref>"[http://ameblo.jp/c-ute-official/entry-12176581491.html 報告です！ 岡井ちゃん]" (in Japanese). ℃-ute Official Blog. 2016-07-07.</ref> However, after consulting her doctor, Okai could only participate as an MC for the first three [[Hello! Project 2016 SUMMER]] shows on July 16 and 17, but returned to fully performing for the following concerts.

On August 20, it was announced that [[℃-ute]] would disband next June at Saitama Super Arena.<ref>"[http://helloproject.com/news/5568/ ℃-uteに関するお知らせ]" (in Japanese). Hello! Project. 2016-08-20.</ref><ref>"[https://www.facebook.com/notes/up-front-link/en-announcement-concerning-ute/1141354845923431 Announcement concerning ℃-ute]." UP-FRONT LINK. 2016-08-20.</ref> Okai said she would like to continue working in variety afterwards.<ref>https://twitter.com/dmny1009/status/766659914630467584</ref>

===2017===
On May 27, Okai announced on her blog that after [[℃-ute]] disbands in June she wants to focus on appearing on variety TV shows.<ref>"[http://ameblo.jp/c-ute-official/entry-12275277511.html 今後について。岡井ちゃん]" (in Japanese). ℃-ute Official Blog. 2017-05-27.</ref>

She joined [[M-line club]] on July 10.<ref>"[http://www.up-fc.jp/m-line/news_Info.php?id=10650 矢島舞美・中島早貴・鈴木愛理・岡井千聖　M-line club 加入のお知らせ]" (in Japanese). M-line club. 2017-07-10.</ref>

On October 30, Okai performed two new solo songs titled "[[Oolong Hai no Onna]]" and "[[Haha no Kyoukun]]" for her [[Hello! Project 20 Shuunen Kinen Zen'yasai ~One by One~#Okai Chisato First Solo Live|Hello! Project 20 Shuunen Kinen Zen'yasai ~One by One~]] solo live. "Oolong Hai no Onna" was digitally released on December 8.<ref>"[http://up-front-works.jp/news/7918/ 配信スタート！岡井千聖「ウーロンハイの女」]" (in Japanese). UP-FRONT WORKS. 2017-12-08.</ref> "Haha no Kyoukun" was announced to also be digitally released "soon",<ref>"[http://www.jp-r.co.jp/chisato_okai/news/7804/ 初ソロ曲「ウーロンハイの女」「ハハの教訓」近日配信開始予定！]" (in Japanese). J.P ROOM Inc. 2017-11-10.</ref> but no further details have been revealed since.

On November 10, Okai's profile was added to {{ufg|J.P ROOM}}.

===2018===
On February 18 and 21, Okai held the [[Okai Chisato Solo Live 2018 ~Oolong Hai no Onna~]] at COTTON CLUB.

On May 15, she announced that she was hospitalized because of a recurrence of vocal cord nodules and was scheduled for surgery the next day.<ref>https://twitter.com/okai_chisato/status/996271715691868160</ref> Okai rested for a week afterwards, which she was expected to recover in time for her birthday live.<ref>https://twitter.com/okai_chisato/status/996627312060727296</ref>

On June 21, Okai celebrated her 24th birthday at a fanclub live titled [[Okai Chisato FC Live ① ~Katte ni Hello Pro 20 Shuunen Omedetou! 1998~2006~ -A, Watashi mo Omedetou!-]], which was also held to celebrate [[Hello! Project]]'s 20th anniversary with fan-requested songs from between 1996 and 2006. Two shows took place at Yamano Hall.<ref>"[http://www.up-fc.jp/m-line/news_Info.php?id=11775 ★ファンクラブ会員限定イベント★「岡井千聖FCライブ①～ 勝手にハロプロ20周年おめでとう！1998～2006 ～ -あ、私もおめでとう！-」開催決定！]" (in Japanese). M-line club official site. 2018-04-05.</ref>

On August 3, Okai performed at TOKYO IDOL FESTIVAL 2018 on the HOT STAGE. In the first part, she covered [[Buono!]] songs as the one-shot unit [[Cattivo!]] with [[Kobushi Factory]] member [[Hamaura Ayano]] and [[Tsubaki Factory]] member [[Asakura Kiki]]. In the second part of the stage, Okai performed [[℃-ute]] songs with idols who love ℃-ute.<ref>"[http://www.idolfes.com/2018/tif_news/detail.html?p=tif_news20180802_05 今年も℃-uteの名曲を岡井千聖と℃-ute大好きアイドルたちがTIFで熱演！]" (in Japanese). TOKYO IDOL FESTIVAL 2018. 2018-08-01.</ref><ref>"[https://deview.co.jp/News?am_article_id=2116938 元℃-uteの岡井千聖、TIF2018で浜浦彩乃＆浅倉樹々とともにBuono!を再現　「おいしい2人が組んでくれて、逆に申し訳ない」]" (in Japanese). ''Deview''. 2018-08-03.</ref>

On September 22, she held the [[Okai Chisato FC Live ② ~Katte ni Hello Pro 20 Shuunen Omedetou! 2007-2012~]] with two shows at Yamano Hall.

On September 23, Okai was appointed with eight other OG and active [[Hello! Project]] members from Saitama Prefecture as Host City Special Supporters for Kumagaya during the [[wikipedia:2019 Rugby World Cup|Rugby World Cup 2019]] hosted by Japan.<ref>"[http://www.helloproject.com/news/9207/「熊谷圏オーガニックフェス、ラグビーワールドカップ2019™開催1年前イベント」中島早貴、浜浦彩乃(こぶしファクトリー)出演！]" (in Japanese). Hello! Project. 2018-09-19.</ref><ref><"[http://www.pref.saitama.lg.jp/a0313/rwc2019/h30/1yeartogofestival.html ラグビーワールドカップ2019™開催1年前イベント]" (in Japanese). Saitama Prefecture. 2018-09-18.</ref>

Starting on October 4, Okai became the main MC for the TOKYO MX information variety program ''Bakusou Roke Hunter''.<ref>"[https://prtimes.jp/main/html/rd/p/000000001.000038032.html メインＭＣ岡井千聖／司会進行安東弘樹　明日スグ行きたくなるスポット見つけます！TOKYO MX『爆走ロケハンター』2018年10月4日（木）26：10放送スタート]" (in Japanese). ''PR TIMES''. 2018-10-01.</ref>

On November 2, Okai was appointed as an ambassador of Keirin Marché, a media company that endorses beginner and experienced cycling races.<ref>https://twitter.com/okai_chisato/status/1058224549102149632</ref>

===2019===
On January 19 and 20, she held the [[Okai Chisato Fanclub Tour ~Boso de Asa Ii Hanashi~]].

On February 11, she held the [[Okai Chisato FC Live ③ ~Katte ni Hello Pro 20 Shuunen Omedetou! 2013-2018~]] with two shows at Yamano Hall.

On April 26, Okai announced that she has decided to take a break from entertainment activities as she has been continuously working for 17 years since she joined [[Hello! Project Kids]], and she wants to take the time to figure out what she wants to do next in life. She does not know how long her hiatus will be and she will not use her blog or SNS while she rests.<ref>"[https://ameblo.jp/chisato-okai-official/entry-12456984785.html ファンの皆様へ]" (in Japanese). Okai Chisato Official Blog. 2019-04-26.</ref>

On July 6, it was reported that Okai was in an affair with Mitani Ryouki. Mitani, a renowned professional cyclist, was married at the time and a father to four children. The pair allegedly met in late 2017 and began the affair in spring 2018, when Okai was seen at Mitani's races. At the time the news broke, Mitani and his wife were in the middle of divorce proceedings. Mitani's wife is also seeking child support from her husband and monetary compensation from Okai for damages.<ref>"[https://bunshun.jp/articles/-/12713?page=2 元℃-ute岡井千聖の“略奪不倫”で競輪賞金王が離婚　家族崩壊で妻は慰謝料請求へ]" (in Japanese). Bunshun. 2019-07-06.</ref><ref>"[https://news.nifty.com/article/entame/etc/12113-331668/ 元℃-ute岡井千聖に競輪選手との不倫報道　選手の元妻から慰謝料請求も]" (in Japanese). Nifty News. 2019-07-06.</ref>

===2020===
On February 5, Okai's family opened up an official YouTube channel.<ref> https://www.youtube.com/watch?v=BXW1YzR3ado</ref>

On May 1, Okai announced that she had retired from the entertainment industry and ended her contract with {{ufg|J.P ROOM}} on April 30. In her blog post, she announced that she would be using the experience she obtained so far to devote to her family's work.<ref name="retired">Okai Chisato. "[https://ameblo.jp/chisato-okai-official ファンの皆様へ]" (in Japanese). Okai Chisato Official Blog. 2020-05-01.</ref><ref>"[http://www.jp-r.co.jp/news/12001 岡井千聖に関するご報告]" (in Japanese). J.P ROOM. 2020-05-01.</ref><ref>"[https://www.oricon.co.jp/news/2161366/full/ 岡井千聖、芸能界引退を発表]" (in Japanese). ORICON NEWS. 2020-05-01.</ref>

On May 15, her family opened up an official Twitter account and fanclub.<ref> https://twitter.com/okaike_tv0515/status/1261220791942709249?s=21</ref><ref> https://twitter.com/okaike_tv0515/status/1261220834544254978?s=21</ref>

==Personal Life==
<tabber>Family=
{{Main|Okai Chisato/Family}}
Okai has 4 sibilings: two younger sisters, [[Okai Asuna|Asuna]] and [[Okai Chisato/Family|Mion]], and two younger brothers, [[Okai Chisato/Family|Tsubasa]] and [[Okai Chisato/Family|Rimu]]. Asuna is a former member of [[Hello Pro Egg]]. Her father runs a small plumbing business. Her grandfather is half American, making her 1/8 American. She is also the aunt of Asuna's two children.<ref>http://ameblo.jp/c-ute-official/entry-12206555589.html?utm_source=dlvr.it&utm_medium=facebook</ref>

Okai currently owns 3 dogs: [[Okai Chisato/Family#Pets|Howl]], [[Okai Chisato/Family#Pets|Pants]], and [[Okai Chisato/Family#Pets|Bra]]. [[Okai Chisato/Family#Pets|Howl]] lives in her parent's house while  [[Okai Chisato/Family#Pets|Pants]] lives with her. She previously owned dogs named [[Okai Chisato/Family#Pets|Pine]] and [[Okai Chisato/Family#Pets|Lipstick]], who passed away in 2013 and December 25th, 2017, respectively. She also owns 4 turtles, which includes [[Okai Chisato/Family#Pets|Elizabeth]] and [[Okai Chisato/Family#Pets|Kamedo]].

Former [[Morning Musume]] member [[Fujimoto Miki]] said in a Youtube video published on July 12, 2022, that Chisato has had a child.<ref>https://www.youtube.com/watch?v=d5lST7CfcS8&ab_channel=%E3%83%8F%E3%83%AD%E3%83%BC%21%E3%83%9F%E3%82%AD%E3%83%86%E3%82%A3%2F%E8%97%A4%E6%9C%AC%E7%BE%8E%E8%B2%B4</ref>

|-|Education=
When Okai joined [[Hello! Project Kids]], she was a second year elementary school student.<ref name="hpkidshm" /> She graduated from high school in March 2013. 

|-|Friendships=
Okai most notably gets along with the other [[℃-ute]] members and [[Tsugunaga Momoko]].

|-|Nicknames=
*'''Chissaa''' (ちっさー):  Official nickname, given her since joining ℃-ute. Used by members and fans.
*'''Okai-chan''' (岡井ちゃん): Official nickname. Used by members and fans.
</tabber>

==Profile==
<tabber>Stats=
*'''Name''': Okai Chisato (岡井千聖)
*'''Nickname''': Chissaa (ちっさー), Okai-chan (岡井ちゃん), Chisato (ちさと), Chippe (ちっぺ)
*'''Birthdate''': {{Birthday |1994|06|21|}}
*'''Birthplace''': Tokorozawa, {{residence|Saitama|Japan}}
*'''Blood Type''': A
*'''Height''': {{Height|152}}
*'''Weight''': 42-43 kg<ref>"[http://aikru.com/item/I-PA000000000000150982 【℃-ute】岡井千聖の身長や彼氏の噂は？かわいい画像も大量にまとめ！に投稿された画像]" (in Japanese).</ref><ref>"[http://frann.jp/blog-entry-221.html 岡井千聖のカップと彼氏を大公開！！]" (in Japanese).</ref>
*'''Western Zodiac''': {{Zodiac|06|21}}
*'''Eastern Zodiac''': {{Lunar|1994|06|21}}
*'''Hello! Project Status:'''
**2002-06-30: Member
**2005-06-11: ℃-ute member
**2017-06-12: Graduated (℃-ute disbands)
*'''{{ufg|UP-FRONT GROUP}} Status:'''
**2002-06-30: Joined {{ufg|UP-FRONT AGENCY}}
**2012-10-01: Transferred to {{ufg|UP-FRONT PROMOTION}}
**2017-11-10: Transferred to {{ufg|J.P ROOM}}
**2019-04-26: Hiatus
**2020-04-30: Retired
*'''Years in ℃-ute:''' 12 Years
*'''Official Kaomoji:''' ﾘ ・一・ﾘ
*'''℃-ute Color:'''
**{{penlight|blue|10}} Blue (2006-2009)
**{{penlight|green|10}} Green (2009-2017)
*'''Audition Song:''' "Country Roads" from the anime movie "Whisper of the Heart"
*'''Hello! Project Groups''':
**[[Hello! Project Kids]] (2002-2017)
**[[℃-ute]] (2005–2017)
**[[Athena & Robikerottsu]] (2007–2008)
**[[BeriKyuu]] (2011-2015)
**[[Team Okai]] (2012-2013)
**[[Mellowquad]] (2013-2016)
**[[Triplet]] (2014-2016)
*'''Shuffle Units:'''
**[[H.P. All Stars]] (2004)
**[[Tanpopo#Tanpopo#|Tanpopo#]] (2009-2011)
**[[Hello! Project Hina Fes Units#Okaileage|Okaileage]] (2017)
**[[Cattivo!]] (2018)
*'''Concert Units:'''
**[[Hello! Project Akagumi]] (2005)
**[[Wonderful Hearts]] (2006–2010)
**[[Hello! Project Mobekimasu]] (2010–2013)
*'''Other Groups:'''
**[[Little Gatas]] (2004–2007)
**[[Gatas Brilhantes H.P.]] (2007–2015)
**[[Ganbarou Nippon Ai wa Katsu Singers]] (2011)
|-|Q&A=
*'''Hobbies:''' Watching movies, collecting purikura
*'''Special Skill:''' Getting along with anyone
*'''Strong Point:''' Making everyone laugh
*'''Weak Point:''' Fooling around too much
*'''Habit:''' Walking like a crab
*'''Favorite Color:''' Blue, light blue, brown
*'''Favorite Flower:''' Cosmos and sunflower
*'''Favorite Movie: '''The Terminator, Backdraft, Nankyoku Monogatari.
*'''Favorite Book:''' Shonen Magazine.
*'''Favorite Word:''' "Nice"
*'''Favorite Season:''' Summer and winter
*'''Favorite Food:''' Asian pears, kalbi kuk bap, sushi
*'''Least Favorite Food:''' Eggplant
*'''Favorite Song:''' [[Uwaki na Honey Pie]] and GET UP! Rapper
*'''Charm Point:''' Eyes
*'''Looks Up To:''' [[Fujimoto Miki]], [[Sayashi Riho]]
</tabber>

==Discography==
{{Main|Okai Chisato/Discography}}
===Indie Singles===
*[2011.01.25] [[Romantic Ukare Mode (Okai Chisato)|Romantic Ukare Mode]] <small>([[Fujimoto Miki]] cover)</small>

===Songs===
;Digital Songs
*[2010.11.27] [[Hello Cover Series#Okai Chisato|LOVE Namida Iro]] <small>([[Matsuura Aya]] cover)</small>
*[2010.12.10] [[Hello Cover Series#Okai Chisato|Manatsu no Kousen]] <small>([[Morning Musume]] cover)</small>
*[2010.12.10] [[Egao ni Namida ~Thank You! My Dear Friends~ (Okai Chisato)|Egao ni Namida ~Thank You! My Dear Firends~]] <small>([[Matsuura Aya]] cover)</small>
*[2011.03.29] [[Furusato (Okai Chisato)|Furusato]] <small>([[Morning Musume]] cover)</small>
*[2017.12.08] [[Oolong Hai no Onna]]

;Solo Songs
*[2012.02.02] [[Dainana Shou "Utsukushikutte Gomen ne"|Tokai no Neon ga Odoroku Kurai no Utsukushisa ga Hoshii]] (都会のネオンが驚くくらいの美しさがほしい; ''I Want To Be Beautiful Enough To Overshadow the Neon Lights of the City'')
*[2012.04.18] [[Kimi wa Jitensha Watashi wa Densha de Kitaku]] (君は自転車　私は電車で帰宅; ''You Ride Your Bicycle, While I Catch the Train To Get Home'') <small>([[C-ute]] cover)</small>
*[2013.04.03] [[Crazy Kanzen na Otona|Kanashiki Heaven]] (悲しきヘブン; ''Sad Heaven'') <small>(Okai Part Ver.)</small>

;Original Songs
*[2017] [[Haha no Kyoukun]]

===Solo Image DVDs===
*[2010.12.24] [[Chissaa]] (ちっさー)
*[2011.12.09] [[IMP. GIRL]] <small>(e-Hello! DVD)</small>

===Live DVDs===
*[2011.02.25] [[Solo Live 2011 Vol.1 ~Kaisha de Odottemita!!~ Live in Heaven|Solo Live 2011 Vol.1 ~Kaisha de Odottemita!~ Live in Heaven]] (会社で踊ってみた)
*[2011.04.18] [[Solo Live 2011 Vol.2 ~Hanzomon de Odottemita!!~]] (半蔵門で踊ってみた)

===Fanclub DVDs===
*[2013.10.26] [[Okai Chisato Birthday Event ~last teenage~]]
*[2014.09.26] [[℃-ute Okai Chisato Birthday Event 2014]]
*[2015.03.26] [[℃-ute Suzuki Airi・Okai Chisato FC Event 2015]]
*[2015.08.27] [[Cutie Kankousha Fanclub Tour "Okai Chisato Birthday Party" in Nagano]]
*[2016.xx.xx] [[℃-ute Okai Chisato Birthday Event 2016]]
*[2017.01.26] [[℃-ute Suzuki Airi・Okai Chisato FC Event 2016]]
*[2017.10.26] [[℃-ute Okai Chisato・Hagiwara Mai FC Event 2017]]
*[2018.09.26] [[Okai Chisato FC Live ① ~Katte ni Hello Pro 20 Shuunen Omedetou! 1998~2006~ -A, Watashi mo Omedetou!-]]
*[2018.12.27] [[Okai Chisato FC Live ② ~Katte ni Hello Pro 20 Shuunen Omedetou! 2007-2012~]]
*[2019.06.26] [[Okai Chisato FC Live ③ ~Katte ni Hello Pro 20 Shuunen Omedetou! 2013-2018~]]

==Publications==
{{Main|Okai Chisato/Publications}}
===Solo Photobooks===
*[2010.12.22] [[Chisato]]

===Calendars===
*[2018.10.13] Okai Chisato 2019nen Calendar (岡井千聖 2019年 カレンダー)

==Works==
===Movies===
*[2002] [[Koinu Dan no Monogatari]] (仔犬ダンの物語)
*[2004] [[Hotaru no Hoshi]] (ほたるの星)
*[2011] [[Ousama Game]] (王様ゲーム) <small>(as Maruoka Kaori)</small>
*[2011] [[Gomennasai]] (ゴメンナサイ)

===TV Programs===
*[2002–2007] [[Hello! Morning]] (ハロー! モーニング)
*[2007] [[℃-ute has come. ~℃-ute ga Yatte Kita~]] (℃-ute has come.～キュートガヤッテキタ～) <small>(2 episodes)</small>
*[2007–2008] [[Haromoni@]] (ハロモニ@)
*[2008] [[Berikyuu!]] (ベリキュー!)
*[2008–2009] [[Yorosen!]] (よろセン!)
*[2010–2011] [[Bijo Gaku]] (美女学)
*[2011–2012] [[Hello Pro! TIME]] (ハロプロ！ＴＩＭＥ)
*[2012–2013] [[Hello! SATOYAMA Life]] (ハロー！ＳＡＴＯＹＡＭＡライフ)
*[2013–2014] GOGO! Smile! (ゴゴスマ)
*[2014–2017] [[The Girls Live]]
*[2014–2015] Haraichi no Kami Appli (ハライチの神アプリ)
*[2014] [[℃-ute no Challenge TV]] (℃-uteのチャレンジTV)
*[2015–2016] Afro no Hen (アフロの変)
*[2015] Chou Shiritoriaru (超シリトリアル)
*[2018–2019] Bakusou Roke Hunter (爆走ロケハンター)

===TV Dramas===
*[2011] Tokusou Shirei! Aichi Police (特捜指令！アイチ★ポリス) (as Mai)
*[2012] [[Suugaku♥Joshi Gakuen]] (数学♥女子学園)

===Theater===
*[2004] 34 Choume no Kiseki -HERE'S LOVE- (34丁目の奇跡 -HERE'S LOVE-)
*[2007] [[Neruko wa ℃-ute]]
*[2008] [[Keitai Shosetsuka]]
*[2009] [[Atarumo Hakke!?]]
*[2010] [[Akuma no Tsubuyaki]]
*[2011] [[1974 (Ikunayo)]] (1974(イクナヨ))
*[2011] [[Sengoku Jieitai (stage play)|Sengoku Jieitai]]
*[2012] [[STRONGER]] (ストロンガー)
*[2012] Theater in The Round (青山円形劇場)
*[2013] [[Sakura no Hanataba]] (さくらの花束) <small>as ''Koyamada Mei'' (小山田芽以)</small>

===Internet===
*[2010–2012] Okaichan, Neru! (岡井ちゃん、寝る!)
*[2011] [[Michishige Sayumi no "Mobekimasutte Nani??"]] 
*[2013–2017] [[Hello! Project Station]]
*[2014–2016] [[UF LICKS|MUSIC+]]
*[2015–2016] [[GREEN ROOM]]
*[2016–2019] [[Upcoming]]
*[2016–2017] [[Girls Night Out]]

===Music Videos===
*[2007] [[Buono!]] - [[Honto no Jibun]]
*[2013] Okai Chisato - DARS de Bakoon!

===Radio===
*[2013] Tokai no Hitorigurashi (都会の一人暮らし) <small>(Radio drama)</small>
*[2016.10] HELLO! DRIVE! (HELLO! DRIVE! -ハロドラ-) <small>(Fridays)</small>

==Solo Events==
<tabber>1st Event=
The event took place in June 2008.
*Ganbacchae! by Morning Musume
*Ekimae no Dai Happening by Fujimoto Miki

|-|2nd Event=
The event took place in September 2008.
*Koi no Hana by Abe Natsumi
*Bishoujo Shinri by ℃-ute

|-|3rd Event=
The event took place in September 2009.
*Robokiss by W
*Zutto Suki de Ii Desu ka by Matsuura Aya
*Big dreams by ℃-ute

|-|4th Event=
The event took place in November 2009.
*Bokura no Kagayaki by ℃-ute
*As ONE by ℃-ute
*ONLY YOU by Zoku・v-u-den
*EVERYDAY Zekkouchou! by ℃-ute

|-|5th Event=
The event took place in April 2010.
*ONLY YOU by Zoku・v-u-den
*Watarasebashi by Matsuura Aya
*Hajimete Kuchibiru wo Kasaneta Yoru by Matsuura Aya
*Koi no Jubaku by Berryz Koubou
</tabber>

==Rankings & Milestones==
*She ranked 4th in a magazine's 2011 "Girls that seem like they'll become big stars in the future".<ref>http://chisatointelligenceagency.files.wordpress.com/2011/06/lib396789.jpg</ref>
*She ranked at #38 in ''Anikan R Yanyan'' magazine's May 2013 "Singing idol you like the most".
*She ranked 9th in mixi's June 2013 Hello! Project Popularity Ranking.

==Trivia==
{{Scrollbox3|
*She has said [[Fujimoto Miki]] is the [[Hello! Project]] member she respects the most.
*[[Miyamoto Karin]] thinks that Okai Chisato is the coolest member of Hello! Project.
*She often played "Mario Kart" with the [[℃-ute]] members.
*She was the first member of [[℃-ute]] to get her own single and own listing on iTunes.
*She was the last active member of ℃-ute to release their first photobook.
*Okai's audition song was "Country Roads" from the anime movie "Whisper of the Heart."
*She has a scar on the right side of her nose, and she said she got it before joining [[Hello! Project]].
*She was known as a "tomboy" in the early years of [[℃-ute]] while she had short hair.
*She was known for being the only member to post dance covers on ℃-ute's ''YouTube'' account (ocutechannel).
*Okai was the first member of ℃-ute to dye her hair brown. She first had it dyed around the time she joined [[Hello! Project Kids]].
*Okai is scared of ghosts.
*As of 2010, Okai was the only current member of [[℃-ute]] with type A blood.
*She was the shortest member in ℃-ute.
*In [[Team Okai]], she covers [[Sayashi Riho]].
*Okai and [[Yajima Maimi]] were the last remaining [[Hello! Project]] members who were still in [[Gatas Brilhantes H.P.]] at the time of the team's disbandment.
*Okai said she wants to appear on lots of variety shows to get people to know her.
*She has admitted to being in love with fellow member [[Hagiwara Mai]] during their first few years in ℃-ute.<ref>[[℃-ute DVD Magazine Vol.34]]</ref>
*Three days after turning 20, she tried her first alcoholic drink.
*She stated that she would like to visit England because she loves castles and other things from the country.
}}

==Honorary Titles==
{{HonoraryTitleStart}}
{{HonoraryTitle
|previous=[[Niigaki Risa]]
|title=Youngest Member of [[Tanpopo|Tanpopo#]]|start=January 2009|end=January 2011
}}
|}

==References==
{{Reflist}}

==External Links==
*[https://web.archive.org/web/20190330212058/http://www.jp-r.co.jp/chisato_okai/ J.P ROOM Profile (archived)]
*[https://twitter.com/okai_chisato Twitter (deleted)]
*[https://www.instagram.com/chisatookai_official_uf/ Instagram (deleted)]
*[https://www.instagram.com/okaichisato_0621/ Personal Instagram (deleted)]
*[http://ameblo.jp/chisato-okai-official Official Blog (inactive)]
*[https://twitter.com/okaike_tv0515 Okai Family Twitter]
*[https://www.youtube.com/channel/UC96eQfcuOqQGmmDoh0jPsvg Okai Family YouTube channel (deleted)]
*[https://miitus.jp/t/okaike_fannotudoi/login/box/?logout&p=alJkZGxoQVRFY1Zjc2FmdnhmdU5TWC83N3dCZ09YN1N3OEE2U2I4SXlGbGJBYkI2Zzl2RzhVZTRnc3N1Y0RNczV4eGpodnNQOXArSlp0M00yZlU4alE9PQ== Okai Family Fanclub]
*[https://web.archive.org/web/20170612075854/http://helloproject.com/c-ute/profile/chisato_okai/ ℃-ute Profile (archived)]
*[http://ameblo.jp/c-ute-official Official ℃-ute Ameba Blog (inactive)]
*[http://gree.jp/c_ute Official ℃-ute GREE Blog (inactive)]

{{C-ute}}
{{Tanpopo}}
{{Chanpuru}}

[[cs:Okai Chisato]]
[[de:Okai Chisato]]
[[es:Okai Chisato]]
[[it:Okai Chisato]]
[[ja:岡井千聖]]
[[Category:Multiethnic Members]]
[[Category:Okai Chisato]]
[[Category:C-ute]]
[[Category:Hello! Project Kids]]
[[Category:Wonderful Hearts]]
[[Category:Tanpopo]]
[[Category:Blood Type A]]
[[Category:1994 Births]]
[[Category:2002 Additions]]
[[Category:Members from Saitama]]
[[Category:Athena & Robikerottsu]]
[[Category:June Births]]
[[Category:Members born in Heisei Period]]
[[Category:Hello! Project]]
[[Category:Members born before Hello! Project's formation]]
[[Category:Members featured in Hello! Pro Time]]
[[Category:Members featured in Hello! SATOYAMA Life]]
[[Category:Members featured in Hello! Morning]]
[[Category:Members featured on Utaban]]
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[[Category:Gatas Brilhantes H.P.]]
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[[Category:Members featured in Berikyuu!]]
[[Category:H.P. All Stars]]
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[[Category:Soloists]]
[[Category:Up-Front Works (label)]]
[[Category:Green Member Color]]
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[[Category:Mellowquad]]
[[Category:Unit Leaders]]
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[[Category:Members featured in Hello! Project Station]]
[[Category:Triplet]]
[[Category:2017 Departures]]
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[[Category:Hello! Project Graduates]]
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[[Category:J.P. Room]]
[[Category:Cattivo!]]
[[Category:Members involved in Scandals]]
[[Category:Dog]]
[[Category:Retired]]