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|Okai Asuna, June 2018|
|Born||May 14, 1996|
|Agency||UP-FRONT PROMOTION (2004-2010)|
|Associated Acts||Hello Pro Egg, Okai Chisato|
|Left||November 28, 2010|
On November 28, Okai withdrew from Hello! Project.
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.
- 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
- Astrological Sign: Taurus
- Hello! Project Groups:
- Hello Pro Egg (2004-2010)
-  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.