Aiba debuted in the drama Tokyo Girl: Anri Okamoto in 2008.[2] In December of the same year, she won the "Betsu Ma-Girl Audition" at the 2009 Bessatsu Margaret Quasi Grand Prix.
Aiba's first leading role was in the film Shodō Girls: AoiAoi Sora in October 2010. She was also chosen as the finalist at the non-no Model Audition 2010 for non-no.
Aiba studied for one year in the Netherlands since February 2015. Her studies were suspended due to her activities and temporarily returned in May to model for a poster of Chiba Bank.[3][4][5]
^Aiba, Karin (3 Jan 2015). "謹賀新年". Karin Aiba official blog: OtsuKarin (in Japanese). Ameba Blog. Archived from the original on 2016-03-05. Retrieved 30 Jun 2016.
^Aiba, Karin (31 Aug 2015). "千葉銀行". Karin Aiba official blog: OtsuKarin (in Japanese). Ameba Blog. Archived from the original on 2016-04-25. Retrieved 30 Jun 2016.
^Aiba, Karin (4 Apr 2016). "ただいま". Karin Aiba official blog: OtsuKarin (in Japanese). Ameba Blog. Archived from the original on 2016-04-25. Retrieved 30 Jun 2016.
^"キャスト". AoiAoi Sora (in Japanese). Archived from the original on 2012-12-25. Retrieved 30 Jun 2016.
^"ムシューダプレスリリース". S.T. Corporation (in Japanese). Wayback Machine. 10 Mar 2010. Archived from the original on March 10, 2010. Retrieved 30 Jun 2016.{{cite web}}: CS1 maint: unfit URL (link)
