- Name: Shimakura Rika (島倉りか)
- Birthday: August 20, 2000
- Birthplace: Tokyo, Japan
- Blood Type: A
- Height: 153.7cm
- Specialty: Eating watermleon quickly, catching insects
- Hobbies: Watching Hello! Project videos, karaoke, watching movies
- Looks Up To: Morito Chisaki, Inoue Rei
- Hello! Project groups:
- Hello! Pro Kenshuusei (2017–)
- Unnamed Group (2018–)
Shimakura Rika participated in the "Morning Musume '16 Shinseiki Audition", but failed to pass. It was later announced through an official website update on March 6, 2017 that Shimakura had joined Hello Pro Kenshuusei, alongside Hibi Marina, Eguchi Saya, Doi Rena, Okamura Minami, Matsunaga Riai, Yamada Ichigo, and Nakayama Natsume. She made her first live appearance and was formally introduced at the ""Hello Pro Kenshuusei Happyoukai 2017 3gatsu ~Marching!~" event on March 11, 2017.
Shimakura was awarded Best Performance with 324 audience votes on May 6, 2018 at the "Hello! Project Kenshuusei Happyoukai 2018 ~Haru no Koukai Jitsuryoku Shindan Test~" event, for her performance of "Fiesta! Fiesta!" by Juice=Juice. On June 9, 2018 during the "Hello! Project Kenshuusei Happyoukai 2018 6gatsu ~Niji~" event in Tokyo, it was announced that Shimakura would join the upcoming group featuring previously announced leader Ichioka Reina, along with Nishida Shiori and Eguchi Saya. The group would be unveiled at a later date in 2018.
- Music Videos
-  Bokutachi Karen na Shounen Gasshoudan (僕たち可憐な少年合唱団) (as Yuria and Julian, team ♯Gumi)
- Her favorite music is Hello! Project, Showa kayokyoku pop, and Disney.
- Her Favorite sport is badminton.
- Favorite food is watermelon and salmon.
- Her motto is "Do one good deed each day" (一日一善).
- Thinks her charm point is the dimple that only appears on her left cheek.
- Her favorite school subject is physical education.
- She has a younger sister.