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Okai Asuna (岡井明日菜), legal name Yajima Asuna (矢島明日菜), is a former member of the Hello! Project trainee group Hello Pro Egg. She is the younger sister of ℃-ute's Okai Chisato.


Okai Asuna, March 2010

Okai Asuna, November 2009

Okai Asuna, April 2009

Okai Asuna, June 2008

Okai Asuna, April 2007

Early Life[]

Okai Asuna was born on May 14, 1996 in Saitama, Japan to Okai Ken and Hitomi. She has an older sister, Okai Chisato, a younger sister, Okai Mion, and two little brothers, Okai Tsubasa and Okai Rimu.


Okai Asuna joined Hello! Project as a member of Hello Pro Egg in June 2004 when she passed the auditions alongside twenty-nine other girls.


In June, Okai was selected along with Ogawa Saki to represent Hello Pro Egg in their collaboration with Kodansha's release of Mottainai Baasan Ondo.


From March 14-22, she appeared in the third stage play in the "Kaba" series, "Kaba 3", alongside Melon Kinenbi and Miyoshi Erika.[1]


On November 28, Okai withdrew from Hello! Project after the 2010 Hello! Project Shinjin Kouen 11gatsu ~Yokohama JUMP!~.


On August 31, Asuna got married to an ordinary man with the last name Yajima. On October 6, Okai Chisato announced on her blog that Asuna had given birth to her first child later named Rito.[2]


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.[3]


On February 5, Okai's family opened up an official YouTube channel.[4] It was deleted a few months later without explanation.

On May 15, her family opened up an official Twitter account and fanclub.[5][6]


  • Specialty: Cooking, drawing, can ride 5 laps on a sports ground on a unicycle
  • Dislikes: Insects
  • Favorite Food: Crab and melon
  • Least Favorite Food: Eggplant and cauliflower
  • Looks Up To: Niigaki Risa
  • Aiming for in H!P: Goto Maki

  • Works[]


    • [2009] 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.[7]
    • Her husband has the same last name as Yajima Maimi.


    External Links[]