Shimakura Rika was born on August 20, 2000 in Tokyo, Japan.
In late 2016, Shimakura participated in the Morning Musume '16 Shinseiki Audition Saiboshuu, but failed.
On March 6, it was announced that Shimakura had joined Hello Pro Kenshuusei alongside Hibi Marina, Eguchi Saya, Doi Rena, Okamura Minami, Matsunaga Riai, Yamada Ichigo, and Nakayama Natsume. She was introduced at the Hello! Project Kenshuusei Happyoukai 2017 3gatsu ~Marching!~ on March 11.
On February 13, she participated in a fanclub event titled Hello Pro Kenshuusei Special Event in Nagoya ~Hajimemashite! 2~ at Midland Square Cinema 2 alongside Maeda Kokoro, Yamazaki Yuhane and Nishida Shiori, where she performed a cover of Berryz Koubou's 23rd single "Maji Bomber!!".
On March 20, she participated in a fanclub event titled Engeki Joshibu "Bokutachi Karen na Shounen Gasshoudan" DVD Hatsubai Kinen Special Event in Nagoya at Midland Square Cinema 2 alongside Maeda Kokoro, Noguchi Kurumi, Yonemura Kirara, Yamazaki Yuhane, and Nishida Shiori.
On May 6, Shimakura won the best performance award with 324 votes at the Hello! Project Kenshuusei Happyoukai 2018 ~Haru no Koukai Jitsuryoku Shindan Test~ event for her performance of "Fiesta! Fiesta!".
On June 9, during the Hello! Project Kenshuusei Happyoukai 2018 6gatsu ~Niji~ in Tokyo, it was announced that Shimakura was chosen alongside Nishida Shiori and Eguchi Saya to join the new group led by Ichioka Reina that would debut later in 2018.
On October 19, the name of the group led by Ichioka was announced as CHICA#TETSU. It was also announced that it would be part of the combined group BEYOOOOONDS alongside the second group Ame no Mori Kawa Umi and the Hello! Project "ONLY YOU" Audition winners.
On August 20, she celebrated her 19th birthday in a fanclub event titled BEYOOOOONDS / CHICA#TETSU Shimakura Rika Birthday Event 2019, which featured two shows at Shinjuku ReNY.
On August 20, she will celebrate her 20th birthday at a fanclub event titled BEYOOOOONDS / CHICA#TETSU Shimakura Rika Birthday Event 2020 with two shows at Shinjuku ReNY. In compliance with government policy, cheering, crowding, standing, and closeness in the venue were prohibited, and wearing masks were required to enter.
She has two younger siblings, and she owns a pet turtle.
The following list are notable friendships Shimakura Rika has acquired:
- Name: Shimakura Rika (島倉りか)
- Birthdate: August 20, 2000
- Birthplace: Tokyo, Japan
- Blood Type: A
- Height: 153.7cm
- Western Zodiac: Leo
- Eastern Zodiac: Dragon
- Hello! Project Status:
- UP-FRONT PROMOTION Status:
- 2017-03-06: Member
- BEYOOOOONDS / CHICA#TETSU Member Color: Lavender
- Hello! Project Groups:
- Other Groups:
- Special Skills: Eating watermelon quickly, catching insects
- Hobbies: Watching Hello! Project videos, karaoke, watching movies
- Favorite Music Genres: Hello! Project, Showa era pop, Disney
- Favorite Sport: Badminton
- Favorite School Subject: Physical education
- Motto: Ichinichi ichizen (一日一善; Do one good deed a day)
- Favorite Food: Watermelon and salmon
- Favorite Color: Red
- Charm Point: The dimple which is only on her left side
- Favorite Hello! Project songs: Be Alive, VERY BEAUTY, LOVE Namida Iro
- Looks Up To: Morito Chisaki, Inoue Rei
- [2020.08.20] Juukyuusai no Natsu (十九歳の夏)
- [2018.07.12] Bessatsu Shonen Champion
- [2018.07.20] CD Journal
- [2018.07.30] Gekkan Entame
- [2018.07.31] BIG ONE GIRLS
- [2018.08.09] BOMB
- [2018.09.20] CD Journal
- [2018.09.22] TVfan
-  Bokutachi Karen na Shounen Gasshoudan
-  Attack No.1
-  Fushigi no Kuni no Alicetachi
-  Reborn ~13nin no Tamashii wa Kami-sama no Yume wo Miru~
-  Arabeyooooonds Nights
- [2018–2019] The Girls Live
- [2019–2020] Hello Pro! TOKYO Sanpo (ハロプロ!TOKYO散歩)
-  KURAGAE ~Watashitachi no Koto, Oshite Kudasai!~ (KURAGAE –私たちのこと、推してください！-)
- [2020–] Uta-navi! (うたなび！)
-  Hello! Project presents... "Solo Fes!"
- [2017–] Hello! Project Station
- [2018–] Upcoming
- [2018–] tiny tiny
- [2018–] OMAKE CHANNEL
- [2019–2020] Hello Pro no Oshigoto Challenge
-  Hello Pro Kouhaku Taiko THE☆BATTLE 2019
- If she could have one wish, she'd like to go back to the age of the dinosaurs because she likes them.
- Her favorite dinosaur is the Megalosaurus (she has previously named the tyrannosaurus, pteranodon, and parasaurolophus).
- She sang "Be Alive" for her Hello! Project Kenshuusei Happyoukai 2017 ~Haru no Koukai Jitsuryoku Shindan Test~ solo.
- She particularly likes Showa era idols and songs, especially Matsuda Seiko, and hopes to have activities in the future involving Showa idol music.
- She learned Karate.
- During her December 2019 "Shimakura Rika 1001 Nights" talk event, she revealed that she originally wasn't aiming to become an idol; her mother sent in her application to Morning Musume's 13th generation audition without asking her. She started learning about Hello! Project after she was accepted into the audition. After failing the final round, she felt it was something worth working hard for.
- Her mother asked her if she would like to join Hello Pro Kenshuusei after that, to help to fix her half-hearted self attitude.
- She began learning to play guitar in 2019 as a hobby, but wants to become skilled enough to perform.
- Gallery:Shimakura Rika
- List:Shimakura Rika Discography Featured In
- List:Shimakura Rika Publications Featured In
- List:Shimakura Rika Concert & Event Appearances
- List:Shimakura Rika Pocket Morning Weekly Q&A
- ↑ 1.0 1.1 1.2 1.3 "アイドルニュータイプ現る「ハロプロの最終兵器」BEYOOOOONDSインタビュー（２）" (in Japanese). ENTAME next. 2019-04-17.
- ↑ "ハロプロ研修生に新メンバーが加入！" (in Japanese). Hello! Project. 2017-03-06.
- ↑ Yamagishi Riko. ""発表！"山岸理子" (in Japanese). Tsubaki Factory Official Blog. 2018-06-09.
- ↑ "新グループ、グループ名決定のお知らせ" (in Japanese). Hello! Project. 2018-10-19.
- ↑ "ハロー！プロジェクト新グループ、グループ名決定のお知らせ" (in Japanese). Hello! Project Station (via YouTube). 2018-10-19.
- ↑ https://www.youtube.com/watch?v=XER4w8zxRRI
- ↑ "★ファンクラブ会員限定イベント★「BEYOOOOONDS/CHICA#TETSU 島倉りかバースデーイベント2020」開催決定！" (in Japanese). UP-FC. 2020-07-22.
- ↑ https://news.walkerplus.com/article/155809/
- ↑ Shimakura Rika. "卒業！島倉りか" (in Japanese). BEYOOOOONDS / CHICA#TETSU Official Blog. 2019-03-14.
- ↑ "BEYOOOOONDS FCイベント2018 ~冬の陣ZIN ~" (in Japanese). Suzuki Keita Official Blog. 2018-12-03.
- ↑ "【特別企画 #12】ひなフェス BEYOOOOONDS LIVE /「LOVEペディア」小田さくらボーカルREC / 島倉りかと電話！/ tiny play back MC：山﨑夢羽" (in Japanese). ハロ！ステ 2020-07-08.
- ↑ Top Yell NEO 2018 SUMMER magazine special issue.
- ↑ Hello Dream. Episode 17.
- BEYOOOOONDS / CHICA#TETSU Official Profile
- BEYOOOOONDS / CHICA#TETSU Official Blog
- Hello Pro Kenshuusei Profile (archived)
|BEYOOOOONDS / CHICA#TETSU||Ichioka Reina (Leader) | Shimakura Rika | Nishida Shiori | Eguchi Saya|
|BEYOOOOONDS / Ame no Mori|
|Takase Kurumi (Leader) | Maeda Kokoro | Yamazaki Yuhane | Okamura Minami | Kiyono Momohime|
|BEYOOOOONDS||Hirai Miyo | Kobayashi Honoka | Satoyoshi Utano|
|Major Singles||1. Megane no Otoko no Ko / Nippon no D・N・A! / Go Waist|
|Other Singles||Collaborations: YEAH YEAH YEAH / Akogare no Stress-free / Hana, Takenawa no Toki|
|Concerts & Events|
|Other Concerts & Events|
|Hello! Project Concerts|
|Units & Other Acts|
|Associated Acts||Hello Pro Kenshuusei|