In 2020, Arisawa took part in the ANGERME ONLY ONE Audition ~Watashi wo Tsukuru no wa Watashi~ and made it to the finals, but was not chosen to join the group.
On November 4, it was announced that Arisawa had joined Hello Pro Kenshuusei alongside Ishiyama Sakura. They were introduced on December 19 at Hello! Project Kenshuusei Happyoukai 2020 12gatsu ~Hikari~.
On May 29, Arisawa won the Hashimoto director award at the Hello! Project Kenshuusei Happyoukai 2021 ~Haru no Koukai Jitsuryoku Shindan Test~ event for her performance of "SONGS".
On July 7, Arisawa was announced as a member of Juice=Juice alongside Ebata Kisaki and Hello! Project "Juice=Juice" "Tsubaki Factory" Goudou Shin Member Audition winner Irie Risa.
As of April 2021, Arisawa is currently in her last year of high school.
- Name: Arisawa Ichika (有澤一華)
- Birthdate: December 23, 2003
- Birthplace: Osaka, Japan
- Blood Type: O
- Western Zodiac: Capricorn
- Eastern Zodiac: Goat
- Hello! Project Status:
- UP-FRONT PROMOTION Status:
- 2020-11-04: Member
- Juice=Juice Member Color: Light Blue
- Hello! Project Groups:
- [2020–] Hello Dream.
- [2021-] Hello! Project Station
- She has the same birthday as former Morning Musume member Kamei Eri.
- She is good at speaking and writing in English, and wrote posts in English on the official Hello Pro Kenshuusei Twitter account on occasion.
- She can play the violin.
- She enjoys making songs on her laptop.
- Gallery:Arisawa Ichika
- List:Arisawa Ichika Discography Featured In
- List:Arisawa Ichika Concert & Event Appearances
- List:Arisawa Ichika Publications Featured In
- List:Arisawa Ichika Pocket Morning Weekly Q&A
- "ハロプロ研修生に新メンバー加入のお知らせ" (in Japanese). Hello! Project. 2020-11-04.
- "「Juice=Juice」「つばきファクトリー」 新メンバー決定！" (in Japanese). Hello! Project. 2021-07-07
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