Hello! Project Wiki
Hello! Project Wiki

Yamagishi Riko (山岸理子) is a Japanese pop singer and dancer under Hello! Project as a member and leader of Tsubaki Factory. She first joined Hello! Project as a member of Hello Pro Kenshuusei in June 2012 and was introduced at the June 2012 recital alongside Nomura Minami.


Yamagishi Riko, November 2021

Yamagishi Riko, May 2021

Yamagishi Riko, September 2020

Yamagishi Riko, January 2020

Yamagishi Riko, February 2019

Yamagishi Riko, November 2018

Yamagishi Riko, July 2018

Yamagishi Riko, February 2018

Yamagishi Riko, July 2017

Yamagishi Riko, February 2017

Yamagishi Riko, August 2016

Yamagishi Riko, September 2016

Yamagishi Riko, January 2016

Yamagishi Riko, May 2015

Yamagishi Riko, April 2015

Yamagishi Riko, March 2015

Yamagishi Riko, February 2014

Yamagishi Riko, November 2013

Yamagishi Riko, February 2013

Yamagishi Riko, August 2012

Early Life[]

Yamagishi Riko was born on November 24, 1998 in Chiba, Japan.

She was a part of DSK Dancer's Club prior joining Hello Pro Kenshuusei.


In June 2012, Yamagishi joined Hello Pro Kenshuusei[1] after auditioning for the program.[2] She was officially introduced as a member on June 17 at the June 2012 recital alongside Nomura Minami.[3] Later that summer, she participated in the Morning Musume 11ki Member "Suppin Utahime" Audition alongside several other members of Hello Pro Kenshuusei, but failed.

Begining in 2013, Yamagishi began to take part in activites outside of Hello Pro Kenshuusei starting with the Winter 2013 Hello! Project concert tour, where she was a back-dancer for several performances. She then continued participating in every Hello! Project concert tour, as well as Soto Fest and the annual Hinatsuri Festival and Countdown Lives, as a trainee, until mid-2015.

After the conclusion of the winter Hello!Con, she participated in the stage play Nettai Danshi, which ran from February 7th to February 17, 2013, alongside Kaga Kaede.[4] On March 6th, she participated in a fanclub event for newcomers Ichioka Reina and Makino Maria.

Starting on April 2013, Yamagishi was starring on the Hello Pro Kenshuusei original webshow Hello Pro Kenshuusei no Tadaima Kenshuuchuu!. The show concluded in September. Soon after, on October 5 a new webshow titled ~Onedari Entame!~ Hapi★Pure began airing. Hapi★Pure concluded on September 27, 2014, one year after it began airing.

In fall 2013, Yamagishi participated in Morning Musume's fall 2013 tour alongside several other trainees as a back-dancer. She was later chosen to be part of the opening and challenge act for Morning Musume's fall 2014 Budokan concert, S/mileage's summer 2014 Budokan concert, Berryz Koubou's fall 2014 Budokan Concert, and ℃-ute's spring 2014 concert tour, [5] ℃-ute no Hi concert at Nippon Budokan and spring 2015 concert tour alongside other selected trainees.

In late 2013, Yamagishi auditioned for a role with Engeki Joshibu and passed. She starred in the Engeki Joshibu musical Bokutachi Karen na Shounen Gasshoudan, which ran from March 14 to March 23, 2014, which also features Yasuda Kei, Ogawa Makoto and several other trainees. At around the end of the year, she participated in the stage play Kurukuru to Shi to Shitto, starring Niigaki Risa and Kikkawa Yuu. The stage play ran from December 3rd to December 11, 2014.


In 2015, Yamagishi was featured in the music video for ℃-ute's 27th single A-side "Tsugi no Kado wo Magare" alongside Kaga Kaede, Ichioka Reina, and Horie Kizuki as back-up dancers.

On April 29, 2015, it was announced that Yamagishi would be debuting in a new unit named Tsubaki Factory alongside Kishimoto Yumeno, Niinuma Kisora, Asakura Kiki, Ogata Risa and Tanimoto Ami. Yamagishi's response regarding the new unit:

That I entered the Kenshuusei and then am going to debut in such short fashion makes me nervous, but when I was chosen, I was also surprised. To think that all of those that have supported me until now will be with me forever makes me happy. In Hello! Project there are a lot of groups with varied personalities, I want us to become a group that can reliably put out our personality for everyone to see.[6]

On August 8, it was announced that Yamagishi would be the leader of Tsubaki Factory.


On March 25, Yamagishi announced at Hello! Project Hina Fest 2017 that she would release her first solo photobook titled Riko on April 27.

On November 24, Yamagishi celebrated her 19th birthday at a fanclub event titled Tsubaki Factory Yamagishi Riko Birthday Event 2017, which featured two shows at TOKYO FM HALL.


On May 27, the Fami Hello! PHOTOBOOK was released, including Yamagishi's gravure that was originally published in an August 2017 issue of Weekly Famitsu.[7]

On November 26, Yamagishi celebrated her 20th birthday at a fanclub event titled Tsubaki Factory Yamagishi Riko Birthday Event 2018, which featured two shows at TOKYO FM HALL.


On November 26, she celebrated her 21st birthday at a fanclub event titled Tsubaki Factory Yamagishi Riko Birthday Event 2019, featuring two shows at TOKYO FM HALL.


On March 27, it was announced that she would release her second photobook R-21 on May 13.[8]

On May 14, she opened up an official Instagram account.[9]

On November 24, she celebrated her 22nd birthday at a fanclub event titled Tsubaki Factory Yamagishi Riko Birthday Event 2020, featuring two shows at Sunpearl Arakawa..[10] In compliance with government policy, cheering, crowding, standing, and closeness in the venue were prohibited, and wearing masks were required to enter.


On November 26, she celebrated her 23rd birthday at a fanclub event titled Tsubaki Factory Yamagishi Riko Birthday Event 2021, featuring two shows at LANDMARK HALL.[11] In compliance with government policy, cheering, crowding, standing, and closeness in the venue were prohibited, and wearing masks were required to enter.

Personal Life[]

Yamagishi has an older sister. [12] She also has a nephew.[13]

She owned a miniature dachshund named Annie, whom she had since she was in her first year in elementary school.[14] Annie passed away on March 3, 2016.[15]

Yamagishi was a second year middle school when she initially joined Hello Pro Kenshuusei in June 2012. When she joined Tsubaki Factory in April 2015, she was in her second year of high school. She graduated from high school in March 2017.[16]

The following list are notable friendships Yamagishi Riko has acquired:

Her parents named her Riko by taking the first kanji from each of their names.[17]

The following is a list of nicknames that have been used to refer to Yamagishi Riko:

  • Rikoriko (りこりこ): Official nickname. Given to her since joining Hello Pro Kenshuusei.
  • Yama (やま): Used by Ichioka Reina.


  • Hobbies: Reading books, collecting pens
  • Specialties: Dancing, cartwheels
  • Favorite Music Genres: Hip hop, R&B, J-pop
  • Favorite Sport: Badminton
  • Motto: Minna chigatte, minna ii. (みんなちがって、みんないい。; Everyone is different, everyone is good.)
  • Favorite Food: Wakame egg soup, Beansprouts, grated yam, edamame, natto, ume, and fruit[18]
  • Least Favorite Food: Shiitake mushrooms, pickles carrots, sea urchin, and persimmon[18]
  • Favorite School Lunch Item: Miso cheese salad[N1]
  • Favorite Colors: Yellow-green, pink
  • Favorite Animal: Dogs;[N1] her favorite breeds are Miniature Dachshund, Shiba Inu, and Toy Poodle)[14]
  • Favorite Hello! Project Songs:
  • Favorite Tsubaki Factory Song: Teion Yakedo
  • Favorite Movies: Cinderella, Biri Gal[14]
  • Favorite Anime: Chibi Maruko-chan, Sazae-san, Crayon Shin-chan, Doraemon[14]
  • Looks Up To: Suzuki Airi, Fukumura Mizuki[14], ℃-ute, Sasaki Rikako

  • Discography[]

    Main article: Yamagishi Riko/Discography

    Fanclub DVDs[]


    Main article: Yamagishi Riko/Publications

    Solo Photobooks[]

    • [2017.04.27] Riko (理子)
    • [2020.05.13] R-21




    TV Programs[]


    Music Videos[]


    Award Place /
    Most airhead in Hello Pro Kenshuusei
    (March 2014 Issue of Gekkan Entame)[19]


    • She wanted to join Hello Pro Kenshuusei because she liked Minimoni when she was little.[2]
    • She thinks she won't lose to any other member in the droopiness of her eyes.
    • She wants to be someone who makes everyone energetic. She also wants to be able to dance cool and sing.
    • For her, the hardest thing about being a Hello Pro Kenshuusei is when she isn't chosen for things and when she feels like she hasn't improved at all.
    • When asked what group she'd like to join, she answered Morning Musume. When asked again later, she said that her dream was to join a Hello Pro Kenshuusei unit.
    • She wants to try singing "Crazy Kanzen na Otona" by ℃-ute.
    • She sang "Kono Machi" for the Hello Pro Kenshuusei Happyoukai 2013 ~Haru no Koukai Jitsuryoku Shindan Test~ event and her number for the event was 15.
    • She says that everything has gotten easier since she joined the program. She's progressed in singing and dancing and has gotten people below her. She thinks she's probably competent when it comes to rhythm but not so much with pitch. Still, she finds the lessons fun and is glad she joined the program.
    • As of August 2015, she has the most theater work from the Kenshuusei.
    • Fukumura Mizuki and Uemura Akari said that they are curious about Yamagishi.
    • Ever since she got her member color, she started to collect green colored items.
    • Her future goal is to appear in dramas and movies, and to work with animals.

    Honorary Titles[]

    Honorary Titles
    Preceded by
    Leader of Tsubaki Factory
    2015 – Present
    Succeeded by
    Preceded by
    Ogata Risa
    Oldest member of Tsubaki Factory
    2020 – Present
    Succeeded by


    1. ^ ^ Said during the Hello Pro Kenshuusei corner at the November 16 afternoon show of Morning Musume Concert Tour 2013 Aki ~CHANCE!~.


    1. "アーティスト > ハロプロ研修生 > プロフィール > 山岸理子" (in Japanese). Hello! Project Official Site. 2014-04. (Archived: 2014-04-24).
    2. 2.0 2.1 2.2 "Hello Pro Kenshuusei Perfect Directory" (ハロぷろ研修生パーフェクト名鑑). BOMB Magazine, 2013-12 Issue (pg 52). Gakken Marketing. Release Date: 2013-11-09.
    3. "未来のハロプロ人気アイドルがここに!ハロプロ研修生発表会開催" (in Japanese). DeView. 2012-06-19.
    4. http://gekijyo.net/Gekipro/stage/2013/12/post-46.html
    5. http://www.helloproject.com/news/1588/
    6. "ハロプロ、今年2組目の研修生ユニット「つばきファクトリー」" (in Japanese). ORICON STYLE. 2015-04-29. Translation by MejraThea: "Tsubaki Factory Member Comments." THEA (via Tumblr). 2014-04-29.
    7. "ハロー!プロジェクト20周年記念「ファミハロ!PHOTOBOOK」発売決定!!" (in Japanese). Hello! Project. 2018-04-27.
    8. "山岸理子(つばきファクトリー)セカンド写真集「R-21」発売決定!!" (in Japanese). Hello! Project. 2020-03-27.
    9. "ハロー!プロジェクトメンバーオフィシャルInstagramスタート!" (in Japanese). Hello! Project. 2020-05-14.
    10. "★ファンクラブ会員限定イベント★「つばきファクトリー 山岸理子バースデーイベント2020」開催決定!" (in Japanese). UP-FC. 2020-10-15.
    11. "★ファンクラブ会員限定イベント★「つばきファクトリー 山岸理子バースデーイベント2021」開催決定!" (in Japanese). UP-FC. 2020-10-15.
    12. http://blog-project.net/yamagishi-riko/232228
    13. Yamagishi Riko. ""あと一週間!"山岸理子" (in Japanese). Tsubaki Factory Official Blog. 2015-05-19.
    14. 14.0 14.1 14.2 14.3 14.4 14.5 Yamagishi Riko. ""自己紹介の続き~" 山岸理子" (in Japanese). Tsubaki Factory Official Blog. 2015-05-18.
    15. ""ありがとう"山岸理子" (in Japanese). Tsubaki Factory Official Blog. 2016-04-26.
    16. ""卒業"山岸理子" (in Japanese). Tsubaki Factory Official Blog. 2017-03-15.
    17. Pocket Morning. 2016-11-06. (Translation by Ro-kun)
    18. 18.0 18.1 Yamagishi Riko. ""始まりましたよ〜( ¨̮ )" 山岸理子" (in Japanese). Tsubaki Factory Official Blog. 2015-05-16.
    19. Gekkan Entame. March 2014 Issue. Published 2014-01-30.

    External Links[]