Hirose Ayaka (広瀬彩海; real name: 廣瀬彩海) is a former Japanese idol under Hello! Project as a member and the leader of Kobushi Factory. She was first introduced as a Hello Pro Kenshuusei member on November 29, 2014 at the Hello Pro Kenshuusei Happyoukai 2014 ~11gatsu・12gatsu no Nama Tamago Show!~.

Prior to joining Hello Pro Kenshuusei, she was a member of NICE GIRL Project! Kenshuusei.

On March 30, 2020, Kobushi Factory disbanded, and Hirose Ayaka graduated from Hello! Project.[1] Soon after, she left UP-FRONT PROMOTION.[2] As of late 2020, she has been working freelance as a talent and musical actress.

Biography[edit | edit source]

Hirose Ayaka, March 2020

Hirose Ayaka, October 2019

Hirose Ayaka, April 2019

Hirose Ayaka, August 2018

Hirose Ayaka, March 2018

Hirose Ayaka, December 2017

Hirose Ayaka, June 2017

Hirose Ayaka, November 2016

Hirose Ayaka, July 2016

Hirose Ayaka, February 2016

Hirose Ayaka, September 2015

Hirose Ayaka, March 2015

Hirose Ayaka, January 2015

Early Life[edit | edit source]

Hirose Ayaka was born on August 4, 1999 in Kanagawa, Japan.

2011-2013[edit | edit source]

On September 19, 2011, Hirose was introduced as a member of NICE GIRL Project! Kenshuusei during the Trainees Collection Vol.2 live at Shibuya Yaneura.[3]

In summer 2012, Hirose participated in the Morning Musume 11ki Member "Suppin Utahime" Audition, but failed to pass the third round.

2014[edit | edit source]

On November 16, NICE GIRL Project!'s trainee program was abolished. Soon after, Hirose, Hashimoto Nagisa, Horie Kizuki, Ogata Risa, Shimano Momoko, and Inoue Rei were given the opportunity to become members of Hello Pro Kenshuusei, transferring to UP-FRONT PROMOTION and joining Hello! Project. She was formally introduced during the Hello Pro Kenshuusei Happyoukai 2014 ~11gatsu・12gatsu no Nama Tamago Show!~ recital concert on November 29 alongside the former NICE GIRL Project! trainees and three other girls.

2015[edit | edit source]

On January 2, during the Hello! Project 2015 WINTER ~DANCE MODE!~ concert, it was announced that Hirose would be debuting in a new Hello Pro Kenshuusei unit alongside Hamaura Ayano, Taguchi Natsumi, Ogawa Rena, Nomura Minami, Wada Sakurako, Fujii Rio and Inoue Rei. The group's name was later announced as Kobushi Factory.

On March 8, during Hello Pro Kenshuusei Happyoukai 2015 ~3gatsu no Nama Tamago Show!~, Hirose Ayaka was announced leader of Kobushi Factory.

2016[edit | edit source]

On August 22, Hirose celebrated her 17th birthday at a fanclub event titled Kobushi Factory Hirose Ayaka Birthday Event 2016, featuring two performances in Tokyo.

2017[edit | edit source]

On August 15, Hirose celebrated her 18th birthday at a fanclub event titled Kobushi Factory Hirose Ayaka Birthday Event 2017, featuring two performances in Tokyo.

2018[edit | edit source]

On August 6, she celebrated her 19th birthay at a fanclub event titled Kobushi Factory Hirose Ayaka Birthday Event 2018, which featured two shows at TOKYO FM HALL.

2019[edit | edit source]

On August 5, Hirose celebrated her 20th birthday at a fanclub event titled Kobushi Factory Hirose Ayaka Birthday Event 2019, featuring two performances at Shinjuku ReNY.

2020[edit | edit source]

On January 8, it was announced that Kobushi Factory would disband on March 30, 2020 with a concert at Tokyo Dome City Hall. Their final single is set to be released on March 4, 2020. Hirose had been in discussions with the agency about her graduation since early 2019, and after discussions with the group, the other members except Inoue Rei also expressed their desire to pursue a new path. It was eventually decided that the group would disband. Afterwards, Hirose graduated from Hello! Project, and began attending university to study music and songwriting in April 2020.[1]

On March 12, Hirose was to hold a joint fanclub event with Inoue Rei and Ogata Risa titled Kobushi Factory Hirose Ayaka・Inoue Rei & Tsubaki Factory Ogata Risa FC Event 2020 at LANDMARK HALL. However, it was cancelled in consideration of a new policy established by the government to prevent the spread of the coronavirus.[4]

On March 30, Kobushi Factory disbanded. Afterwards, Hirose graduated from Hello! Project with the intention of leaving UP-FRONT PROMOTION.[2] Her profile was removed from UP-FRONT PROMOTION's website on April 1, indicating she parted ways with the company.

From September 25 to 27, she appeared in the stage play, Otona Project Dai Sanjuu Dan (Otona Project 第三十弾).[5]

From October 9 to 18, Hirose participated in the event READING LIVE DREAM~2020 in October~.[6]

On November 13, she opened an official YouTube channel.[7]

On December 15, Hirose held her first solo live titled "Hirose Ayaka First LIVE "Saikai -saikai-"". The concert took place in AKIBA Cultures Theater and was broadcasted live on SKY PerfecTV! On-Demand. The concert was limited to 50 SKY PerfecTV! subscribers to watch it presentially, who were selected through lottery on SKY PerfecTV! On-Demand's website.[8][9] In the concert, she also performed her first original song called "Koe no Kagiri".

2021[edit | edit source]

From March 17th to 21th, Hirose was in the stage play Otona Project's Kotoba no Kotoba.

Personal Life[edit | edit source]

She has a younger sister.[10] Back in 2012, she had two hamsters named Chime (ちめ) and Yume (夢).[3][11][12]

When Hirose joined NICE GIRL Project! in September 2011, she was a 6th year elementary school student.[3] When Hirose joined Hello Pro Kenshuusei, she was a first year high school student. On March 12, 2018, she announced that she graduated from high school.[13]

Hirose's given name, Ayaka, means "color" (彩; aya) combined with "sea" (海; ka). Her parents chose "Ayaka" because it was a popular name at the time, and "so she'll become a girl who can give color to even the sea!" was an afterthought.[14]

The following list are notable friendships Hirose Ayaka has acquired:

Here is a list of nicknames that was used to refer to Hirose Ayaka:

  • Ayapan (あやぱん): Official nickname, given her since NICE GIRL Project! Kenshuusei.

Profile[edit | edit source]

Discography[edit | edit source]

See Also: List:Hirose Ayaka Discography Featured In

Original Songs[edit | edit source]

  • [2020.12.15] Koe no Kagiri

Blu-rays[edit | edit source]


Fanclub DVDs[edit | edit source]


Publications[edit | edit source]

See also: List:Hirose Ayaka Publications Featured In

Joint Photobooks[edit | edit source]

Works[edit | edit source]

Theater[edit | edit source]

SurvivorNinja GirlsReborn ~13nin no Tamashii wa Kami-sama no Yume wo Miru~

Movies[edit | edit source]

JK Ninja Girls

TV Programs[edit | edit source]

Internet[edit | edit source]

Radio[edit | edit source]

  • [2016–2019] HELLO! DRIVE! (HELLO! DRIVE! -ハロドラ-) (Wednesdays, 2016.09–2017.09; Thursdays, 2017.10–2019.06)

Music Videos[edit | edit source]

Trivia[edit | edit source]

  • She loves dancing,[3] baseball and books.
  • She has been dancing since she was 7 years old.[3]
  • Her favorite place is under her bunk bed.
  • Her favorite thing is to ride roller-coasters.
  • Her favorite book genres are mystery and science fiction.
  • Her favorite baseball players are Takahashi Yoshinobu from the Yomiuri Giants, and Toritani Takashi from the Hanshin Tigers.
  • Her favorite Hello! Project group is ANGERME.
  • Her favorite actors are Takeuchi Yuko, Yoshitaka Yuriko, Kiritani Mirei, Omasa Aya and Fukada Kyoko.
  • Her favorite artists are THE Possible,[11] Canary Club[11] and Amuro Namie[11].
  • She is left handed.
  • Her love for baseball comes from her grandfather, whom she would always watch baseball games on TV with when she was younger.
  • The Yomiuri Giants is her favorite team, but Toritani Takashi from the Hanshin Tigers is her favorite player.
  • She has a habit of buying books at every opportunity, so her room has become like a library. She especially likes mystery novels, particularly from female authors such as Minato Kanae and Miyabe Miyuki.
  • She has a yorkshire terrier.
  • At an event, she introduced herself as being the sexiest in the group. This came to her mind after wearing jeans one time and thinking to herself, "With this, there's no way that I'm not number one." She confesses though that she ranked seventh in a previous ranking, beating out only Taguchi Natsumi (who has a little sister character).
  • She loves My Neighbor Totoro, and as a 4 year old child she had many of the lines memorized.
  • She talks about her experience being a trainee for the now defunct Nice Girl Project, which was produced by Tsunku. Apparently, they would have street lives in Asakusa where they would perform on top of beer cases. However, sometimes only 1 or 2 people would come so some members would cry on stage. Regardless, she is really indebted to Tsunku for a lot of things.
  • According to the Top Yell July 2016 interview, Hirose's role within the group is "Factory Manager for Sexiness".[16]
  • She did classical ballet up to her 6th year of elementary school. She performed as the lead role Clara in The Nutcracker, but after the recital, she quit because she decided to start becoming an idol.[17]

See Also[edit | edit source]

Honorary Titles[edit | edit source]

Honorary Titles

Preceded by

Leader of Kobushi Factory
2015 – present

Succeeded by

Preceded by
Fujii Rio

Oldest member of Kobushi Factory
2017 – present

Succeeded by

References[edit | edit source]

  1. 1.0 1.1 "こぶしファクトリー活動終了のお知らせ" (in Japanese). Hello! Project. 2020-01-08.
  2. 2.0 2.1 "今とみんなとこれからを作る♡広瀬彩海" (in Japanese). Kobushi Factory Official Blog. 2020-03-28.
  3. 3.0 3.1 3.2 3.3 3.4 3.5 Hirose Ayaka. "嬉しいことが!!" (in Japanese). NICE GIRL Kenshuusei Official Blog "Trainees Collection". 2012-05-24 (Archived: 2014-12-02).
  4. Hirose Ayaka "今のこぶしにできること♡広瀬彩海" (in Japanese). Kobushi Factory Official Blog. 2020-02-27.
  5. https://twitter.com/ayaka_hirose/status/1298190033665458177?s=21
  6. https://twitter.com/ayaka_hirose/status/1301385297167413248?s=21
  7. https://twitter.com/ayaka_hirose/status/1327186226810523648
  8. "元こぶしファクトリー広瀬彩海が配信ソロライブ開催、50名限定で現地観覧も募集" (in Japanese). natalie. 2020-11-19.
  9. https://note.com/ayaka_hirose/n/n19de9bd3558a
  10. Hirose Ayaka. "優男と筋肉と陸上と。♡広瀬彩海" (in Japanese). Kobushi Factory Official Blog. 2015-04-03.
  11. 11.0 11.1 11.2 11.3 11.4 11.5 11.6 11.7 11.8 11.9 Hirose Ayaka. "初浅草(*⌒▽⌒*)" (in Japanese). NICE GIRL Kenshuusei Official Blog "Trainees Collection". 2012-05-20 (Archived: 2014-12-02).
  12. Hirose Ayaka. "はじめまして" (in Japanese). NICE GIRL Kenshuusei Official Blog "Trainees Collection". 2011-09-19 (Archived: 2014-12-02).
  13. Hirose Ayaka. "ありがとう!♡広瀬彩海" (in Japanese). Kobushi Factory Official Blog. 2018-03-12.
  14. Pocket Morning. 2016-11-05. (Translation by Ro-kun)
  15. Hirose Ayaka. "サイリウム!!" (in Japanese). NICE GIRL Kenshuusei Official Blog "Trainees Collection". 2012-09-23 (Archived: 2014-12-01).
  16. What do the girls manage in Kobushi Factory? (Top Yell July 2016)
  17. Hirose Ayaka. "過去♡広瀬彩海" (in Japanese). Kobushi Factory Official Blog. 2019-03-22.

External Links[edit | edit source]

Kobushi Factory
Current Members Hirose Ayaka (Leader) | Nomura Minami| Hamaura Ayano | Wada Sakurako | Inoue Rei
Former Members Fujii Rio | Ogawa Rena | Taguchi Natsumi


Indies: Nen ni wa Nen / Survivor
Major: 1. Dosukoi! Kenkyo ni Daitan / Ramen Daisuki Koizumi-san no Uta / Nen ni wa Nen (Nen'iri Ver.) | 2. Sakura Night Fever / Chotto Guchoku ni! Chototsu Moushin / Osu! Kobushi Tamashii | 3. Samba! Kobushi Janeiro / Bacchikoi Seishun! / Ora wa Ninkimono | 4. Shalala! Yareru Hazu sa / Ee ja nai ka Ninja nai ka | 5. Kore Kara da! / Ashita Tenki ni Naare | 6. Kitto Watashi wa / Naseba Naru | 7. Oh No Ounou / Haru Urara | 8. Seishun no Hana / Start Line

Other Singles

Collaborations: Hyokkori Hyoutanjima | YEAH YEAH YEAH / Akogare no Stress-free / Hana, Takenawa no Toki


Original: 1. Kobushi Sono Ichi | 2. Kobushi Dai Ni Maku
Soundtracks: Butai "JK Ninja Girls" | Eiga & Butai "JK Ninja Girls"

Concerts & Events


Spring Tours: 2016 | 2017 | 2019 (Live, Concert)
Fall Tours: 2016 | 2017 | 2019
Other Tours: 2015 | 2018
Summer Lives: 2016 | 2017 | 2018 | 2019

Joint Concerts

2015: New Fes! 2015 (with Country Girls and Tsubaki Factory) | New Fes! II (with Tsubaki Factory)
2018: Premium Live 2018 Haru "KOBO" (with Tsubaki Factory)


Fanclub Events: 2015 | 2016 (September, December) | 2017 (September, December) | 2018 (August, December) | 2019 (May, August, December)
Fanclub Tours: 2017 | 2018 | 2020
Joined Fanclub Events: 2016 (with Tsubaki Factory) | 2019 (with BEYOOOOONDS)

Other Concerts & Events

Hello! Project Concerts

Summer Tours: 2015 | 2016 | 2017 | 2018 | 2019
Winter Tours: 2015 | 2016 | 2017 | 2018 | 2019 | 2020
Hina Fes: 2016 | 2017 | 2018 | 2019
Hallo! Fes: 2018
COUNTDOWN PARTY: 2015 | 2016 | 2017 | 2018 | 2019
Other Concerts: Berryz Koubou Matsuri

Units & Other Acts
Associated Acts Juice=Juice, Hello Pro Kenshuusei, NICE GIRL Project! Kenshuusei
Hello Pro Kenshuusei
25th Generation Yonemura Kirara
27th Generation Yamada Ichigo | Nakayama Natsume
28th Generation Kubota Nanami | Matsubara Yulia
29th Generation Saito Madoka | Onoda Karin
30th Generation

Hiromoto Ruri | Hashida Honoka | Nishizaki Miku | Hirayama Yuki | Kitahara Momo | Ebata Kisaki | Yofuu Runo | Murakoshi Ayana | Uemura Hasumi

Former Members
1st Generation Korenaga Miki | Kawashima Miyuki | Okada Yui | Noto Arisa | Morozuka Kanami | Aoki Erina | Tanaka Anri | Ose Kaede | Sengoku Minami | Sawada Yuri | Muto Mika | Hashida Mirei | Furukawa Konatsu | Hashimoto Aina | Ooyanagi Maho | Akiyama Yurika | Okada Robin Shoko | Arihara Kanna | Goto Yuki | Sainen Mia | Mori Saki | Yutoku Ayumi | Kitahara Sayaka | Wada Ayaka | Maeda Yuuka | Fukuda Kanon | Saho Akari | Okai Asuna | Sekine Azusa | Ogawa Saki | Maeda Irori | Arai Manami
2nd Generation Mano Erina | Ogura Manami | Komine Momoka
Transfer Student Linlin
3rd Generation Kikkawa Yuu
4th Generation Fukumura Mizuki | Kaneko Rie | Takeuchi Akari
5th Generation Miyamoto Karin
6th Generation Sezaki Azusa | Sato Ayano
7th Generation Hirano Tomomi | Katsuta Rina
8th Generation Takagi Sayuki
9th Generation Tanabe Nanami
10th Generation Kizawa Runa | Nagasawa Wakana | Kudo Haruka
11th Generation Yoshihashi Kurumi | Hamaura Ayano | Taguchi Natsumi
12th Generation Otsuka Aina | Mogi Minami | Ogawa Rena
13th Generation Yamaga Kanae | Oda Sakura
14th Generation Kosuga Fuyuka | Uemura Akari
15th Generation Okamura Rise | Murota Mizuki
16th Generation Yamagishi Riko | Nomura Minami
17th Generation Kanazawa Tomoko | Ichioka Reina | Kaga Kaede | Kishimoto Yumeno | Makino Maria | Wada Sakurako
18th Generation Sasaki Rikako
19th Generation Tanaka Karen | Inaba Manaka | Mikame Kana | Fujii Rio | Mashiro Kana | Inoue Hikaru
20th Generation Yamaki Risa | Yokogawa Yumei | Niinuma Kisora | Oura Hirona | Dambara Ruru | Haga Akane | Funaki Musubu
21st Generation Aikawa Maho | Takemura Miu | Saito Kana
22nd Generation Hashimoto Nagisa | Horie Kizuki | Shimano Momoko | Ogata Risa | Hirose Ayaka | Tanimoto Ami | Inoue Rei | Asakura Kiki | Onoda Saori
23rd Generation Takase Kurumi
24th Generation Ono Mizuho | Nakano Rion | Yanagawa Nanami | Maeda Kokoro | Akiyama Mao | Kanatsu Mizuki | Kasahara Momona | Okamoto Honoka
25th Generation Noguchi Kurumi | Ono Kotomi | Kodama Sakiko | Kiyono Momohime
26th Generation Kawamura Ayano | Yokoyama Reina | Yoshida Marie | Nishida Shiori | Yamazaki Yuhane | Hashisako Rin
27th Generation Shimakura Rika | Hibi Marina | Eguchi Saya | Doi Rena | Okamura Minami | Matsunaga Riai
28th Generation Hashimoto Momoko | Goto Sayaka | Tamenaga Shion | Shutto Anna | Kanemitsu Ruru
29th Generation Kusunoki Mei
Indies Singles 1. Kanojo ni Naritai!!! | 2. Ten Made Nobore! | 3. Oheso no Kuni Kara Konnichiwa / Ten Made Nobore! (DVD single)
Soundtrack Singles Karen na Gasshoudan
Campaign Singles Sora ga Aru | Mottainai Baasan Ondo
Albums 1. ① Let's say "Hello!" | 2. Rainbow×2
Concerts & Events
Shinjin Kouen Concerts

2007: May | August | November
2008: March | June | September | November
2009: April | June | September | November
2010: March | June | September | November

Happyoukai Concerts

2011: September
2012: March | June | September | December
2013: March | June | September | December
2014: February/March | June | September | November/December
2015: March | June | September | November/December
2016: February/March | June | September | December
2017: March | June | September | December
2018: March | June | September | December
2019: March | June | September | December
2020: March
Test Events: 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020

Other Concerts 2010nen Hello Pro Egg Norimen Live 2gatsu
Units & Other Groups
Sub-Units & Groups Tomoiki Ki wo Uetai | Shugo Chara Egg! | Kashou Egg | Hello Pro Kenshuusei Unit
Debuted Acts
(within UP-FRONT)
THE Possible | Mano Erina | S/mileage | Kikkawa Yuu | Up Up Girls (Kari) | Juice=Juice | Kobushi Factory | Tsubaki Factory | BEYOOOOONDS
Associated Acts v-u-den | Little Gatas | ℃-ute | Mix Gatas | Morning Musume | Ongaku Gatas | Gatas Brilhantes H.P. | MilkyWay | High-King | Aa! | Shin Minimoni | Reborn Eleven | Jurin | Country Girls
Related Acts Up-Front Egg | NICE GIRL Project! Kenshuusei | Hello Pro Kansai Kenshuusei | Hello Pro Korea Kenshuusei | Hello Pro Kenshuusei Hokkaido
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