|Okai Asuna, June 2018|
|Legal Name||Yajima Asuna (矢島明日菜)|
|Born||May 14, 1996|
|Agency||UP-FRONT AGENCY (2004-2010)|
|Label||UP-FRONT WORKS (2004-2010)|
|Associated Acts||Hello Pro Egg|
|Joined||June 20, 2004|
|Left||November 28, 2010|
|Time in Group||6 Years, 5 Months, 9 Days|
On November 28, Okai withdrew from Hello! Project after the 2010 Hello! Project Shinjin Kouen 11gatsu ~Yokohama JUMP!~.
On June 3, Asuna announced to her Instagram followers that she was 7 months pregnant and due in September. She gave birth to her second child on September 21, later named Toa.
On February 5, Okai's family opened up an official YouTube channel. It was deleted a few months later without explanation.
- Name: Okai Asuna (岡井明日菜)
- Nickname: Assuu (あっすー), Asunan (あすなん), Asunyaa (あすにゃあ)
- Birthdate: May 14, 1996
- Birthplace: Tokorozawa, Saitama, Japan
- Bloodtype: A
- Height: 156cm
- Western Zodiac: Taurus
- Eastern Zodiac: Rat
- Hello! Project Status:
- 2004-06-20: Hello Pro Egg member
- 2010-11-28: Left
- UP-FRONT GROUP Status:
- 2004-06-20: Joined UP-FRONT AGENCY
- 2010-11-28: Left
- Hello! Project Groups:
- Concert Units:
- Wonderful Hearts (2006-2010)
-  Kaba 3 (かば3)
- She eats bread for breakfast.
- Has a habit of referring to herself as "Asuna"
- Her favorite spot is at the top of her two-floored bed.
- She sometimes appears in her sister's blog, but because she's no longer in the agency, her face is usually censored.
- Her husband has the same last name as Yajima Maimi.
- ↑ Official Gekijyo Page
- ↑ "実は、、、岡井ちゃん" (in Japanese). ℃-ute Official Blog. 2016.10.06
- ↑ "2018/09/21 PM07:41..." (in Japanese). Okai Asuna Instagram. 2018-09-23.
- ↑ https://www.youtube.com/watch?v=BXW1YzR3ado
- ↑ https://twitter.com/okaike_tv0515/status/1261220791942709249?s=21
- ↑ https://twitter.com/okaike_tv0515/status/1261220834544254978?s=21
- ↑ "date♡ちう千聖" (in Japanese). ℃-ute Official Blog. 2013.01.28.
- Okai Family YouTube channel (deleted)
- Okai Family Fanclub
- Okai Family Twitter