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Revision as of 21:16, November 30, 2013

Mitsui Aika
General Information

Also known as

Mittsii (みっつぃー), Ikaika


January 12, 1993 (1993-01-12) (age 27)


Shiga, Japan


Japanese pop



Years active




Associated acts

Morning Musume, Athena & Robikerottsu, Guardians 4, Tanpopo #, Mobekimasu, MobekisuJ, GREEN FIELDS



Mitsui Aika (光井愛佳) was a member of Morning Musume, joining as a member of the eighth generation from the audition in Japan during December 2006. Mitsui's audition process was documented during the late 2006 episodes of Hello! Morning. She performed Hamasaki Ayumi's "Blue Bird" in round one of her audition and Morning Musume's "Furusato" and "Osaka Koi no Uta" in rounds two and three.

After suffering a leg fracture, she was unable to keep up with a new dance oriented Morning Musume, and graduated alongside Niigaki Risa , however she stayed within Hello! Project , the first to do so since 2007. She is now a soloist under Hello! Project.



Mitsui Aika, July 2013


Mitsui Aika, May 2013

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Mitsui Aika, January 2013

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Mitsui Aika, November 2012

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Mitsui Aika, May 2012


Mitsui Aika, May 18 2012 (Aika's graduation message)


Mitsui Aika, April 2012


Mitsui Aika, December 2011


Mitsui Aika, October 2011


Mitsui Aika, September 2011

Mitsui Only You

Mitsui Aika, June 2011


Mitsui Aika, March 2011


Mitsui Aika, November 2010

Mitsui 012 img

Mitsui Aika, October 2010


Mitsui Aika, June 2010


Mitsui Aika, March 2010

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Mitsui Aika, January 2010


Mitsui Aika, January 2010 in Guardians 4


Mitsui Aika, November 2009 in Guardians 4


Mitsui Aika, October 2009


Mitsui Aika, September 2009 in Guardians 4


Mitsui Aika, August 2009


Mitsui Aika, May 2009 in Guardians 4

Mitsui Aika1

Mitsui Aika, March 2009

Aika coveryou

Mitsui Aika, November 2008

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Mitsui Aika, February 2008

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Mitsui Aika, November 2007


Mitsui Aika, February 2007

Early Life

Mitsui Aika was born on January 12, 1993 in Shiga, Japan to Mitsui Yasuo, a Buddhist monk, and a mother whose name is undisclosed. She has an older sister. Mitsui was named by her grandmother.


On December 10, she alone out of five (originally six, but Ayami Masuda dropped out) audition finalists was chosen to join Morning Musume. 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.


Her first appearance at a non-Hello! Project related event took place on February 8, 2007, on Utaban, as part of Morning Musume.

She also took part in Morning Musume Concert Tour 2007 Haru ~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.

In October, 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 ℃-ute. On the November 25 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, 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 has a blog, only available to Official MM Fanclub members titled "Pastel Colour Days".


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


On January 7th, Mitsui played the main character in the horror movie, Real Kakurenbo (Hide and Seek). It was a direct to DVD release film.

On May 9th, Mitsui was diagnosed with left ankle bone fracture. After the Morning Musume concert the past weekend, Aika complained of pain in her left foot, after which she went to the hospital where she was diagnosed with the injury on 5/9. Mitsui was out of events almost the whole summer. She could not participate in the dance shots for Morning Musumes MV's "Kono Chikyuu no Heiwa wo Honki de Negatterun da yo!", "Pyocopyoco Ultra" or "Ren'ai Hunter" because of the injury.


In January, Mitsui wrote in her blog that she is now supposedly cured and ready to dance and perform on stage again.

On January 12, on her birthday, Mitsui opened up an Ameblo blog to the public. She was then the only Morning Musume member with two blogs.

On April 1, she announced she became a regular on the radio show Young Town along with Michishige Sayumi. Many fans believed this to be an April Fools joke.

At the end of April or start of May, Mitsui had a doctors consultation where although her ankle had recovered from the fracture, she will not be able to continue as a member of Morning Musume due to intense movement of her ankle in dancing or concerts.

On May 4, Mitsui Aika announced her graduation from Morning Musume, but not from Hello! Project. She graduated alongside Niigaki Risa at the end of Morning Musume's 2012 Spring Concert Tour (Morning Musume Concert Tour 2012 Haru ~Ultra Smart~ Niigaki Risa Mitsui Aika Graduation Special) on May 18, at the Nippon Budokan.

Official UFA's Statement: {C "Morning Musume 8th generation member Mitsui Aika will be graduating from the group at their “Morning Musume Concert Tour 2012 Spring ~Ultra Smart~ Niigaki Risa Graduation Special” concert on May 18th.

After experiencing pain in her foot on May 9th of last year, she underwent a medical examination at the hospital and received a diagnosis of “a stress fracture in the left anklebone.” Due to her own strong feelings of wanting to continue as a member of Morning Musume, she concentrated on taking a rest from her activities and getting medical treatment until she was able to make a full recovery. However, after a medical examination on April 23rd of this year, the diagnosis was, “She’s reached a near complete recovery, but if she were to repeat an intense performance like she’s done in the past, there’s a likelihood of her ending up in the same condition.”

With that diagnosis, as a result of a thorough discussion between the company and Mitsui herself, she has made the difficult decision to graduate early. Mitsui stated, ”I absolutely want to continue to be a part of Morning Musume, but if there’s a possibility of my injury reoccurring, we have many intense dances that I feel would make my activity as a member of Morning Musume difficult, and if in the near future it became that my left foot couldn’t completely heal, it would cause difficulty in my daily life from here on as well.”

Having to resign in the middle of her time with Morning Musume has left Mitsui with a lack of closure, but while she is full of immensely regretful feelings, she will continue to seek medical treatment from this point forward and we are now consulting her to decide whether or not there is some work she can do within Hello! Project.

We apologize to her fans for this sudden announcement, and we truly hope for your understanding."

Tsunku's Statement: "Thank you for always showing such support. {C Today, we have a notice concerning Morning Musume 8th generation member Mitsui Aika.

After taking a leave from Morning Musume for several months due to her foot condition, and having recently gotten much better, Mitsui had restarted her activity on the tour and in other areas despite not being fully healed, but although it’s a hurried and very unfortunate situation, it has been decided that she will be graduating from Morning Musume as of their “Morning Musume Concert Tour 2012 Spring ~Ultra Smart~ Niigaki Risa Graduation Special” live performance to be held at Nippon Budokan on May 18th.

The reason for this is because, while she was authorized as being “recovered enough that she will have no problems at all in her everyday life” during her recent examination, it was also written that “there is undeniable concern that the injury will reoccur if she continues to move as heavily as she did in the past,” and Mitsui herself seems to have worried very much about her life beyond this point, but she requested, ”Of course, to stay in the group in this incomplete way any longer would create worry and trouble for both all of our fans and the other members, so please allow me to graduate,” and deciding that the thought she’s put into her health issues and manner of living should be respected, I chose to accept her proposal.

Moreover, we considered what would be the right timing in her schedule and other plans, but thinking that, rather than a delay, a quick announcement and graduation would be less of a burden in many senses of the word as well as make for simpler departures in the future, we’ve decided the graduation will take place alongside Niigaki Risa’s. Please understand.

In addition, following her graduation, I believe we will continue to evaluate what she can do in Hello! Project with the guidance of her physician and Mitsui herself, so we ask that you please look after Mitsui Aika with an even greater degree of support."

Mitsui Aika’s Statement: "Thank you for always supporting me. {C But at this time I, Mitsui Aika, have decided to graduate from Morning Musume. Last May, I felt a lot of discomfort in my foot. There have been various attempts to help me improve my problem, but I have been diagnosed with an ‘abnormal’ bone disorder. Because of this, I’m closing full activities as a Morning Musume member so that I may rest. Recently, I’ve been feeling more grateful for being able to participate in Morning Musume and have been looking forward to participating in a range of activties. However, I went to get diagnosed on April 23rd. Although they said 'Your bone doesn’t show any signs of abnormality. So it won’t be problem during everyday life activities', they also said 'However, if you continue with strenuous exercise, this could potentially happen again.'

I thought maybe I’d be at 100% one day as a Momusu member, but the diagnosis said there is a risk of recurrence. I spoke with my mother about the consultation and my future. You need to put your health first, and not worry about the members, staff or fans. So, I wish to graduate. As it’s because of my body, I should graduate soon.

Tsunku and the staff agreed that the best time to graduate would be during the spring tour since the last performance on May 18th is at Budokan. I know it is sudden. I want to apologize to the members and the fans and hope they understand.

I’m sorry to the fans who hoped that I would be able to dance in full. So until the end of the Budokan performance, I will do my best. So until the last show, thank you for your support.

After Morning Musume, I will consult with the staff and Tsunku about what kind of activities I can do within Hello! Project.

Mitsui Aika and Niigaki Risa concluded activites in Morning Musume by promoting Ren'ai Hunter.

In August, Mitsui participated in the Hello! Project Tanjou 15th Anniversary Live Summer 2012 concerts as an MC.

On October, it was announced that Mitsui Aiki would be a member of the new unit GREEN FIELDS alongside Shimizu Saki and Miyazaki Yuka.

On November 7th, GREEN FIELDS released their first single, Boys be ambitious!. Its her first single after her graduation from Morning Musume.


On March 2nd and 3rd, Mitsui participated in SATOYAMA e Yukou ~Forest For Rest~ along with other Hello! Project and UP-FRONT PROMOTION members.

In March, it was announced that Mitsui will "graduate" from Young Town. She was replaced by Iikubo Haruna beginning in April.

Beginning on April 6, Mitsui became a regular on the radio show "ALMA KAMINIITO Sound Map", replacing Ohno Munehiko.

In May, Mitsui stared in a new stageplay called Okujou Wonderland.

From October 12 to 20, Mitsui performed in a play called Nettai Danshi 2 in Zenrosai Hall / Space Zero.

Personal Life


Mitsui sometimes has an inhaler with her at concerts in case her breathing gets bad.

On May 8, 2011, she fractured her left ankle and was in treatment for eight weeks. Recovery was completed after a year, but, since then, she no longer dances in concerts. Events that she missed due to her injury include:

  • 5/14 & 5/15: NHK Osaka Hall
  • 6/5: Kariya-shi Sougou Bunka Center
  • 6/25, 6/26: Harmony Hall Zama
  • 5/28-5/29: Michishige Sayumi, Tanaka Reina, Mitsui Aika Bus Tour in Toukai
  • 6/6 & 6/9: Aika no ANNEX Event ~Pastel Color Days~
  • 6/10: Kuusa x Morning Musume Special Kouen
  • 6/20: STAR digio presents Morning Musume Hatsuka no Kaishingeki Special


  • Name: Mitsui Aika (光井愛佳)
  • Nicknames: Mittsii (みっつぃー), Aika (あいか), Micchi, Charles, Wan-chan, Mittens
  • Birth Date: January 12, 1993 (1993-01-12) (age 27)
  • Birthplace: Otsu, Shiga Prefecture, Japan
  • Blood Type: O
  • Height: 157 cm
  • Hello! Project Status:
    • 2006-12-10: Member
    • 2006-12-10: Morning Musume Member
    • 2012-05-18: Graduated Morning Musume
    • 2006-12-10: Member
    • 2012-10-01: Transfered to J.P. Room
  • J.P. Room Status:
    • 2012-10-01: Member
  • Years in Morning Musume: 5 Years
  • Former Morning Musume Color: Light Purple
  • Current Hello! Project Color: Light Purple (merchandise), White (concert promotions)
  • Audition Songs: Blue BirdFurusatoOsaka Koi no Uta
  • Hello! Project Groups:
  • Concert Units:

  • Favorite food: Plums, strawberries, roast beef, kombu, cuttlefish, fried chicken, vegetables, fruits.
  • Disliked food: Chocolate, sponge cake
  • Favorite color: Black, gold and purple
  • Favorite phrase: "The heaven and the earth, unbeaten ☆"
  • Special skill: Massaging and keeping my room tidy


Solo Songs

Solo DVDs

AikadvdMitsui Aika ANNEX“Aika no ANNEX Event ~Pastel Color DaysMorning Musume Mitsui Aika Sotsugyou Memorial

  • [2011.01.26] Mittsi (Image DVD)
  • [2011.07.XX] Aika no ANNEX Event~Pastel Colors Days (Fanclub DVD)
  • [2012.XX.XX] Aika no ANNEX Event~Pastel Colors Days 2 (Fanclub DVD)
  • [2012.06.24] Morning Musume. Mitsui Aika Sotsugyou Memorial (DVD Magazine)

Discography Featured In

Morning Days Vol.3Morning Days 4 Vol.1Morning Days 4 Vol. 2Morning days 6Morning days 7Real Etude ~ Minna no le Girl's STAGEAi, Reina, & Mitsui - Real-etude Minna no Ie Girl's STAGE

Hello! Project
Morning Musume
Satoyama & Satoumi



  • [2011.01.26] Aika (愛佳)

Digital Photobooks

Upfmitsu 01113

  • [2011.12.02] Alo-Hello! Morning Musume 2011 (アロハロ!モーニング娘。2011) (Aika version)

Concert Photobooks

Rivalpb FantasypbAibelieveshashinshuuRockfunkypbMMULTRASMARTPBREGULAR

For Concert Photobooks, please go to Morning Musume DVDs & Photobooks.



  • [2011] Real Kakurenbo Final (リアル隠れんぼファイナル)
  • [2011] Keitai Deka The Movie 3: Morning Musume Kyuushutsu Daisakusen! ~ Pandora no Hako no Himitsu~ (ケータイ刑事 THE MOVIE3 モーニング娘。救出大作戦!~パンドラの箱の秘密)

TV Programs

TV Dramas

  • [2010] Hanbun Esper (半分エスパー)


  • [2007] きらりん☆レボリューション (Kirarin☆Revolution) (guest role)


  • [2008] Cinderella the Musical (シンデレラ the ミュージカル) as fairy, etc.
  • [2010] Fashionable (ファッショナブル)
  • [2013] TOKUGAWA15
  • [2013] Okujou Wonderland (屋上ワンダーランド) (as Nakahara Yui)
  • [2013] Hito okami The live playing shiata x kyuketsuki ~Katsuai no utage~(人狼 ザ・ライブプレイングシアター X 吸血鬼 〜渇愛の宴〜)
  • [2013] Pochitto na. -Switching On Summer- (ポチッとな。-Switching On Summer-)
  • [2013] Nettai Danshi 2 (熱帯男子2)
  • [2013] Shiritsu Hasuhasu Jogakuin!! (私立ハスハス女学院!!)


  • [2011] Michishige Sayumi no "Mobekimasutte Nani??" (道重さゆみの『モベキマスってなに??』)


  • [2007–2008] Morning Musume Mitsui Aika no, Ai say hello (モーニング娘。光井愛佳の、愛 say hello) (e-radio)
  • [2012–2013] Young Town (ヤングタウン)
  • [2012-] SATOYAMA in KANAGAWA
  • [2013-] ALMA KAMINIITO Sound Map



  • [2007.01] B.L.T


  • Morning Musume Happy 8ki Audition songs:
  • She became good friends with Yoshizawa Hitomi, who adopted an "older sister" figure.
  • Niigaki Risa has an older sister relationship to Mitsui, partly because Niigaki's younger sister is much like Mitsui.
  • Even though she is now an official soloist, she's not active yet (probably because of her ankle).
  • 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).
  • She is the first member to have joined the group with braces. Shortly after joining, she got them removed.
  • Her family calls her "Aika-don" and "Aika-san".
  • Would like to teach Japanese because she said it's fun.
  • Her closest friends in Morning Musume are Michishige Sayumi and Tanaka Reina.
  • The nickname "Wan-chan" (meaning dog in Japanese) was given to her by Takahashi Ai and Kamei Eri when they were describing Mitsui in the Morning Musume DVD Vol. 23.
  • She is a big animal lover.
  • After the graduation of Mano Erina in February 2013, she is the only official Soloist in the Hello! Project.
  • She has a toy poodle named Leo. She also has a Siberian Husky, which is proclaimed to be one of her dream pets.
  • She lives with her older sister and her older sister's boyfriend in Tokyo.
  • She has said that she would love to work with Arihara Kanna, former member of ℃-ute because many said they look alike and they get along well.
  • She is 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 proclaimed herself to be Kusumi Koharu's rival, the two were incredibly close.
  • Admitted that she was jealous of Junjun and Linlin when they first joined because no one talked to her when she joined and she had felt lonely.
  • She is the first Morning Musume member to be the youngest in the group for 4 years, with no new members joining.
  • She said that if she could be another Hello! Project member, she would be Morning Musume's Kudo Haruka because she is cute.
  • During Niigaki Risa's Yorosen!, the girls wrote letters to themselves ten years in the future. When Mitsui's letter was read aloud, the other members were impressed with how mature it sounded.
  • In Yorosen!, she taught Morning Musume about pets.
  • Has a scar on her tummy from when she got her appendix removed.
  • She and Hagiwara Mai are very good friends.
  • Mentors all of 9th Generation alone.
  • She was the only Morning Musume member to not appear in Suugaku♥Joshi Gakuen.
  • It was said that she will miss Morning Musume Concert Tour 2011 Aki Ai Believe ~Takahashi Ai Graduation Memory Special~, but she came on the last day for Takahashi Ai's graduation ceremony in a wheelchair.
  • She said that if a theif came, she thinks Okai Chisato would come to protect her.
  • She is noted to get hurt the most out of members in Morning Musume.
  • She is the first Morning Musume member to have two blogs.
  • She is said to be strict towards 9th and 10th Generation members but they kept friendly relationship.
  • As of April 2011, she's still under tratement for her ankle, because of this she didn't participate in the Dance Shot of Kono Chikyuu no Heiwa wo Honki de Negatterun da yo!/Kare to Issho ni Omise ga Shitai!, Pyocopyoco Ultra, and Ren'ai Hunter. She also didn't participate in Tanaka Reina's, the 9th Generation's, and the 10th Generations' stage play for the same reason.
  • She is the last member of her generation to graduate.
  • She is the eleventh former Morning Musume member to only graduate from Morning Musume and not Hello! Project. The first being Nakazawa Yuko, the second being Goto Maki, the third being Yasuda Kei, the fourth being Abe Natsumi, the fifth being Tsuji Nozomi and Kago Ai, the sixth being Iida Kaori, the seventh being Ishikawa Rika, the eighth being Konno Asami, the ninth being Ogawa Makoto, and the tenth being Yoshizawa Hitomi.
  • She has expressed her desired to go scuba-diving for the SATOUMI movement one day. Both Yoshizawa Hitomi and Ishikawa Rika have already tried it.
  • In Hello! Project DVD Magazine Vol. 28 she was asked who she would pick if she could be in a sub-unit with another member. She answered that she would choose Kudo Haruka because she always liked her, even when she was still a Kenshuusei and because both of them have lower voices.
  • Though Aika stayed in Hello! Project, there are currently no plans to actually debut her as a soloist.

See Also

Honorary Titles

Honorary titles

Preceded by
Kusumi Koharu

Youngest member of Morning Musume
2006 – 2011

Succeeded by
Suzuki Kanon

External Links

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