Mitsui Aika’s Profile


Mitsui ;was the only member chosen out of the five (originally six, but Ayami ;Masuda ;dropped out) audition finalists ;to join Morning Musume ;as an 8th generation member on December 10, 2006. An article published on December 11, 2006 revealed that Mitsui ;wouldn’t be present in the 57th edition of Kōhaku ;Uta Gassen ;but would instead be featured in the group’s 32nd single, Egao ;Yes Nude, which was released on February 14, 2007, following her first public appearance on the last round of the Hello! Project Winter 2007 Tours, ~Shūgetsu 10th Anniversary~ (~集結! 10th Anniversary~, ~Shūgetsu 10th Anniversary~?), which took place between January 27, 2007 and January 28, 2007 at Saitama Super Arena.

She also took part in Morning Musume’s ;2007 Spring Tour ~Sexy 8 Beat~. One week after the results of Happy 8 Ki Audition were announced, Mitsui ;was featured in a small segment of Hello! Morning which included footage from a press conference given on the eleventh. During the conference, Mitsui ;revealed her goal of captivating the public by means of her cheerful personality and smile, emulating fellow member Kusumi ;Koharu, whom she admires and strives to equal or surpass.

Following her concert debut, Mitsui ;was also featured in a small segment of the Oha ;Suta ;morning programme entitled I want to express my gratitude (“ありがとうを伝えたい”, Arigatō ;o tsutaetai?), which purports to show the viewers a fictionalized account of the events following her first concert appearances, dealing with Mitsui’s sadness over the fact she had to part with her former classmates due to her becoming an idol.

Her first appearance at a non-Hello! Project related event took place on February 8, 2007, on Utaban, as part of Morning Musume. In October 2007, Mitsui ;was placed in the unit Athena & Robikerottsu ;along with fellow Morning Musume ;member Niigaki ;Risa, as well as Nakajima ;Saki and Okai ;Chisato of °C-ute.

On the November 25, 2007 episode of Haromoni@, Mitsui ;got the seiyū ;role of Gurossan ;in the anime “Kirarin ;Revolution” starring Kirari ;Tsukishima, voiced by Kusumi ;Koharu.

On April 6, 2008, Hello! Project announced that that ;Mitsui ;would not be able to perform in the 2008 spring tour due to her being in very poor health. Later in the week, it was discovered that she had suffered from acute appendicitis, and would be out of action for two more weeks. She recovered and continued with her scheduled activities. On August 8th, Morning Musume ;collaborated with female theatre group Takarazuka ;to perform “Cinderella the Musical” by Rodgers and Hammerstein. Mitsui took on the role of a fairy, a town girl and a princess.

In 2009, it was announced that Morning Musume ;will be attending the annual anime convention, the Anime Expo in Los Angeles, California as Guests of Honor in July. All members of the current lineup including Mitsui ;Aika ;attended the event. Morning Musume held autograph sessions and a concert. The number of fans that attended the concert reached over 7,000 people.

Mitsui ;currently has a blog only available to Official MM Fanclub members called “Pastel Colour Days”.

In December 2010, Mitsui ;was announced her first Photobook ;titled ‘Mittsi.’ Mitsui ;mentioned in several interviews before that she had wanted a photobook, and was very happy at the announcement.

After a concert on May 5, 2011 she felt pain and was sent to the hospital, where it was discovered that she had a stress fracture on her left ankle. She continued to take part in some performances and events by staying seated on stage and not dancing.

On July 30, 2011 it was announced that she would take a temporary break from activities in order to concentrate on recovering. During Takahashi Ai’s graduation tour she was unable to participate, although she came on stage using crutches or a wheelchair to deliver her goodbye message to graduating member Takahashi Ai. During Takahashi’s last song, she went into the back and brought out Aika to take part in it.

Between January 11th to the 12th, Mitsui had an FC event called Mitsui Aika FC Event ~Aika no ANNEX Event Pastel Color Days 2~.

Aika started her own ameba blog titled aika in January 2012.

In March, it was announced Aika would join Michishige Sayumi as a regular on Sanma’s Young Town Radio. She started on April 7th.

On May 4th, it was announced Aika would graduate on May 18th alongside Niigaki at the Bodukon. Her last single with the group was Renai Hunter.

On May 18th Mitsui graduated from Morning Musume. She is set to continue her activities under Hello! Project.


Name: Mitsui Aika
Nickname: Mittsi
Birth Date: January 12th 1993 (age 18)
Birthplace: Shiga Prefecture, Japan
Blood Type: O
Height: 157cm
Special Skills: Bowling, massaging, keeping her room tidy
Favorite Food: Strawberries, plums, roast beef, dried squid
Disliked Food: Chocolate
Favorite colors: Black, purple and gold.
Favorite phrase: “The heaven and the earth, unbeaten ☆”
Audition Songs: Blue Bird, Furusato, Osaka Koi no Uta
Hello! Project Groups:


  • Morning Musume ;(2006-)
  • Tanpopo# ;(2009-)
  • Hello! Project Mobekimasu (2011-)


  • Athena & Robikerottsu (2007-2008)
  • Guardians 4 (2009-2010)
  • Muten Musume (2010)


  • She became good friends with Yoshizawa ;Hitomi, who adopted an “older sister” figure.
  • She proclaimed herself to be Kusumi ;Koharu’s new rival. The two were incredibly close.
  • She has the habit of talking to herself.
  • Tsunku described Mitsui by saying she only showed exactly 62% of her energy during auditions.
  • Morning Musume ;Happy 8ki Audition songs:

Round 1: “BLUE BIRD” (Hamasaki ;Ayumi) Round 2: “Furusato” (Morning Musume) Round 3: “Osaka Koi no Uta” (Morning Musume)

  • Was the youngest member of Morning Musume until the 9th generation was added January 2011.
  • Her favorite number is 397 because it was her entry number in the audition. Her mother stated she won because it means bloom like a flower (sa ku na = 397).
  • Has a toy poodle named Leo. Recently took home a Siberian Husky, which is proclaimed to be one of her dream pets.
  • Lives with her older sister in Tokyo.
  • Her grandmother named her.
  • Has an inhaler with her in concerts in case her breathing gets bad.
  • Noticed to be wearing flat shoes for single costumes. One cause of not wearing high heels is rumoured to be the operation she had earlier, possibly affecting her ability to dance with high heeled shoes.
  • She considers Tanaka Reina to be like an older sister
  • She considers Tanaka Reina to be like a big sister.
  • She collects earrings.
  • She likes the talents Takeuchi Riki, Yamamoto Yuki, Nishiuchi Mariya, Taira Airi, and Abiru Yu
  • Her favorite singers are Namie Amuro, Kusuo, and Tsuchiya Anna.
  • Her favorite magazines are “JELLY” and “Gina”.
  • Her favorite book is “Harry Potter” and favorite manga is “Meitantei Conan”.

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