Yaguchi Mari

Yaguchi Mari (矢口真里) is a singer, actress, and TV personality. She is a former second generation member and leader of Morning Musume.

In 2009, she graduated, with the rest of the Elder Club, from Hello! Project. She has since released two solo singles and was a part of the OG member groups Afternoon Musume and Dream Morning Musume.

1998
On May 3, she, along with Yasuda Kei and Ichii Sayaka, were chosen to be a part of the second generation of singers to be recruited into Morning Musume.

On November 18, she debuted with Morning Musume's first sub-group, Tanpopo.

She made her movie debut in the film Morning Cop, alongside the other Morning Musume members and Hello! Project soloist Heike Michiyo.

2000
On October 20, she created and formed Morning Musume's sub-group Minimoni. She had an idea for a sub-group whose members were 1.5 m (4 ft 11 in) in height or shorter. Yaguchi, and Morning Musume's songwriter and producer Tsunku, selected two of Morning Musume's newest members, Kago Ai and Tsuji Nozomi, for the new sub-group and the trio began performing in concerts as Minimoni. American-born Mika Todd, of Coconuts Musume, was later added into the group to give the group "an international flavor" and Tsunku made them official.

Their debut single, "Minimoni Jankenpyon! / Haru Natsu Aki Fuyu Daisukki!", was a #1 hit.

Yaguchi also had a supporting role in another film called Pinch Runner alongside the other Morning Musume members.

2002
On February 7, she released her first photobook titled Yaguchi.

She starred in another film called Nama Tamago alongside Iida Kaori, Tsuji Nozomi, & Goto Maki. The film was released in VHS format on March 15 and later in DVD format on May 15.

2003
Yaguchi became Morning Musume's sub-leader in May, after the graduation of Yasuda Kei.

On March 29, she graduated from Minimoni, having Mika Todd replace her as the leader. The group lasted another year until Mika Todd's graduation from the group and Hello! Project altogether.

In July, she debuted with ZYX as leader. In ZYX, Yaguchi acted as a mentor to the Hello! Project Kids, showing them the ropes of being a performing member of Hello! Project. ZYX was the first unit that Hello! Project Kids officially joined.

She also made a guest appearance in one episode of the drama Kochira Hon Ikegami Sho.

She released two more photo books, one titled Love-Hello! Yaguchi Mari, part of an idol DVD she had. The other being Pocket Morning Musume, Volume 2, which also featured Abe Natsumi, Goto Maki, and Iida Kaori.

On October 10, she released her first essay book entitled Oira - MARI YAGUCHI FIRST ESSAY.

2005
On January 30, after the graduation of Iida Kaori, Yaguchi became leader and Yoshizawa Hitomi then became her support as sub-leader.

On April 14, it was reported by tabloid magazine FRIDAY that Yaguchi was in a relationship with actor Oguri Shun. She said she had "betrayed [her] position as an idol" and that she "want[ed] to move on with [her] career as an adult." As such, Yaguchi resigned from Morning Musume without a graduation ceremony.

Her first post-Morning Musume recording, "Nigiyaka na Fuyu", done as a collaboration with Berryz Koubou, appears as the coupling track on Berryz Koubou's November 2005 single "Gag 100kaibun Aishite Kudasai".

2006
In April, it was reported that Yaguchi and Oguri broke up.

In 2006, she continued to appear on television and at live events on behalf of Hello! Project. She also co-hosted two weekly TV shows of her own (Yaguchi Hitori and Kanrui! Jikuu Times) starred in two dramas, and frequently guest starred on other variety shows.

2007
At the start of 2007, she started to perform during Hello! Project concerts again.

In Summer, Yaguchi was cast to host a new Gyao TV show, Midtown TV, thus appearing in a third TV show on air. Midtown TV aired on weekdays and Yaguchi hosted it on Thursdays. Also, Mari and seven H!P Eggs appeared live and with an audience on Ciao TV, a Kids Station show, on September 2, from 19:00 to 19:30, on what appeared to be yet another new TV show for her, which made four Yaguchi Mari TV shows being aired simultaneously.

Yaguchi appeared in a Japanese drama series called Sento no Musume!?. She was one of the main stars in a Japanese day time drama series called Gyarusa, along with her show Yaguchi Hitori, and being an MC at Hello! Project concerts. From May 25, and up to June 6, Yaguchi performed in Damn Yankees, a popular 1955 Broadway musical at the Tokyo Aoyama Theater.

Yaguchi Mari participated in the Minna no Fitness event on April 27. Minna no Fitness is a free internet workout.

When asked about the comebacks of former Hello! Project members Goto Maki and Kago Ai, she replied that she hasn’t been in contact with them and doesn’t know any of the details.

2008
It was announced on October 19, on the official Hello! Project website, that Yaguchi would graduate from the Elder Club and Hello! Project altogether on March 31, 2009.

2009
She graduated, with the rest of the Elder Club, at a graduation concert held at Yokohama Arena on February 1.

Yaguchi Mari's first solo single debuted live on the TV show Quiz Hexagon, which also brought about popular groups Pabo and Shuchishin. The CD single was a collaboration with AIR BAND and included a randomly chosen photo card of either Mari or AIR BAND. It was an emotional performance for Mari who had not performed on live television in over four years.

In April, it was announced that Yaguchi would be writing a blog-like column in Famitsu, one of the most respected video game magazines in Japan and the world. She would be talking about how girls are also passionate gamers. The column also featured photos of Yaguchi. The column was originally released on May 1. The column was titled "I’m a Gamer".

In November, Yaguchi Mari was rendered into a CG (computer graphic) character for a Yakuza-themed video game titled Ryuu ga Gotoku: Densetsu wo Tsugumono.

In December, the cover for Yaguchi Mari to Straw Hat’s single, titled "Kaze wo Sagashite", was released. "Yaguchi Mari to Straw Hat" was the name of the Hexagon family unit for the song which featured Yaguchi as the main singer. The song was used for the opening of the anime One Piece.

2010
In February, Yaguchi announced on her blog that she was opening a restaurant called Shabushabu Onyasai Roppongi. The restaurant opened on March 19. She mentioned on her blog that she was fussing about the interior design, sampling food from the new menu, suggesting new menu ideas, working on staff uniforms and even working on a new uniform for her, so it seems that the restaurant was suited to Yaguchi’s personality.

On Yaguchi's Blog, it was announced that she and Maeda Yuuka would appear in a film titled Hoshisuna no Shima no Chiisana Tenshi ~Mermaid Smile~.

In March, it was revealed that Yaguchi Mari, Satoda Mai and Michishige Sayumi were to be regulars on the midnight TBS show Aimai na!. The air date was set for April 19.

Also in March, Yaguchi opened up a Gree blog.

In June, Yaguchi became be a regular on a local Nagoya show titled ''Go! Bungee Police'' along with Wada Ayaka. The show was scheduled to start on June 6.

In August, it was announced that Yaguchi Mari and S/mileage would appear on Downtown DX. The show was scheduled to air on September 9.

On August 7, Mari joined the new promotional unit Afternoon Musume with seven other OG members to promote Georgia coffee drinks.

2011
On January 2, some media outlets reported that Yaguchi Mari would be getting married to her boyfriend, actor Nakamura Masaya. According to a related source, Yaguchi already said that she would be getting married, and now she needed to report her marriage and decide the day to register the marriage.

On January 28, it was announced that Mari was part of the OG member group Dream Morning Musume and that they would be releasing the groups first album, called Dorimusu ①, on April 20th.

On May 21, it was announced that she would register her marriage to Nakamura Masaya on May 22. Originally, the couple planned to marry in March but, due to the earthquake, their plans were postponed.

2012
On May 22, a year after registering their marriage, Yaguchi Mari and Nakamura Masaya held a wedding ceremony at St. Grace Cathedral in Aoyama. She has changed her name to Nakamura Mari, but continued to use "Yaguchi Mari" as her stage name.

2013
On March 2 and 3, Yaguchi participated in the Forest For Rest ~SATOYAMA e Ikou~ SATOYAMA movement in YOKOHAMA along with other Hello! Project and UP-FRONT PROMOTION members.

From April 4 to April 9, Yaguchi performed in the stage play Ikinuku Kiseki ~Juu Nenme no Negai~.

In mid-May, multiple news agencies and magazines reported that Yaguchi was having an affair. It was also reported that she and her husband got into an argument on whether or not to have a child, and the two were now living apart. Nakamura Masaya's agency confirmed that the two were fighting, but that they were not getting a divorce. According to reports, Nakamura (27) caught Yaguchi (30) sleeping with another man, model Umeda Kenzo (25), back in February. Umeda immediately deleted his social media accounts and retired from modeling, while Yaguchi apologized to the public. Yaguchi was thereafter seen without her wedding ring.

On May 21, she was seen at the Morning Musume Concert Tour 2013 Haru Michishige☆Eleven SOUL ~Tanaka Reina Sotsugyou Kinen Special~, watching Tanaka Reina's graduation.

On May 30, it was announced that Yaguchi and Nakamura Masaya had submitted their divorce papers, and Yaguchi claimed there was domestic violence in their relationship. According to new details, Nakamura came home on February 23, and saw what looked like a bedroom that was just used for sex. Amid further inspection, Nakamura found Umeda hiding in the closet naked, who was then told to kneel down and bow while Nakamura took a photo for evidence. Nakamura was quoted as having said, "Our bed sheets were always changed to new ones whenever I came back home from other locations."

Yaguchi had since left three TV shows that she was a regular on.

On July 8, Tokyo Sports reported that she was currently living with Umeda and that she was planning to make a comeback later that year and make a public apology.

In the Josei Jishin August issue, Yaguchi's acquaintance said she would make her comeback once the issue died down. She apparently stated that she would return within the next 5 years (by 2019). It was rumored that she had 100 million yen in savings.

On October 1, she was transferred to.

On October 13, she blogged that she was going on an indefinite hiatus. She hoped to return to show business one day.

2014
On October 23, Yaguchi appeared on Miyaneya, an afternoon tabloid television show.

In November, Yaguchi started blogging for the first time since her hiatus announcement.

2015
In April, it was announced that she had joined a girl group with fellow Morning Musume graduates Ai Takahashi and Tsuji Nozomi called "Datsumo Musume", under the management of Datsumo Labo for the promotion of their hair removal services.

2017
On December 20, Yaguchi was announced as a founding member of the UP-FRONT esports club, and she was later named the club supervisor.

2018
On March 13, it was reported that she would be marrying a 30-year old former male model sometime in the near future, possibly as soon as that month. The next day, Nikkan Sports reported that the couple, who had been dating for the past four years, set their marriage date for March 26. These reports were confirmed, when on March 26, Yaguchi officially announced on her blog that she had remarried.

Personal Life
Family= Yaguchi has a younger sister named.

When Yaguchi joined Morning Musume in May 1998, she was in her first of high School. She graduated high school in March 2001.
 * -|Education=

Profile
Stats=
 * Birth/Stage Name: Yaguchi Mari (矢口真里)
 * Nickname: Marippe (まりっぺ), Yagu-chan, Yaguttsan (やぐっつぁん), Yaguchorina and Oya-bin
 * Birth date:
 * Birthplace: Yokohama, Kanagawa, Japan
 * Blood Type: A
 * Profession: Actress, singer, and TV personality
 * Height: 144.8cm (4ft 9in.)
 * Feet size: 22cm
 * Weight: 39kg (86lbs)
 * Hello! Project Status:
 * 1998-05-03: Member
 * 2005-04-14: Left Morning Musume
 * 2009-03-31: Graduated
 * Years in Morning Musume: 7 Years
 * Former Morning Musume Color: Light Purple
 * Former Sakura Gumi Color: Pink
 * Dream Morning Musume Color: Yellow
 * Western Zodiac: Capricorn
 * Eastern Zodiac: Dog
 * Education: Seya High School
 * Talent Agency:
 * Hello! Project Groups:
 * Morning Musume (1998-2005)
 * ZYX (2003)
 * ROMANS (2003)
 * Subgroups:
 * Tanpopo (1998-2002)
 * Minimoni (2000-2003)
 * Morning Musume Sakura Gumi (2003-2004)
 * Hello! Project Akagumi (2005)
 * Shuffle Groups:
 * Aoiro 7 (2000)
 * 7-nin Matsuri (2001)
 * Sexy 8 (2002)
 * 11WATER (2003)
 * H.P. All Stars (2004)
 * Other Groups:
 * Afternoon Musume (2010)
 * Dream Morning Musume (2011-2012)
 * UP-FRONT esports club (2018-present)
 * -|Q&A=
 * Hobbies: Playing video games, cooking (just a little), collecting platform shoes
 * Specialty: Making her mouth into the shape of a heart and fitting inside a boston bag
 * Impersonations: Ayumi Hamasaki, Chihiro Onitsuka and Michael Jackson
 * Favorite food: Yakiniku, Bibimbap, cheese, rice, ice, Smoked Shark, Mutton Soup
 * Favorite colour: White (as of 9th August 2007)
 * Disliked food: Milk, liver, avocado, green peas
 * Favorite sport: Table tennis, Badminton
 * Favorite words: Happy, pure, "Full power!"
 * Favorite season: Winter
 * Favorite song: "When You Wish Upon a Star" - Pinocchio
 * Favorite Morning Musume song: I WISH
 * Favorite flower: Sunflowers

Morning Musume

 * Summer Night Town
 * Daite HOLD ON ME!
 * Memory Seishun no Hikari
 * Manatsu no Kousen
 * Furusato
 * LOVE Machine
 * Koi no Dance Site
 * Happy Summer Wedding
 * I WISH
 * Ren'ai Revolution 21
 * The☆Peace!
 * Mr.Moonlight ~Ai no Big Band~
 * Souda! We're ALIVE
 * Morning Musume Single Medley ~Hawaiian~  (Takagi Boo with Morning Musume, Coconuts Musume, Fujimoto Miki, and Ishii Rika)
 * Do it! Now
 * Koko ni Iruzee!
 * Morning Musume no Hyokkori Hyoutanjima
 * AS FOR ONE DAY
 * Shabondama
 * Go Girl ~Koi no Victory~
 * Ai Araba IT'S ALL RIGHT
 * Roman ~MY DEAR BOY~
 * Joshi Kashimashi Monogatari
 * Namida ga Tomaranai Houkago
 * THE Manpower!!!
 * Osaka Koi no Uta

Tanpopo

 * Last Kiss
 * Motto
 * Tanpopo
 * Seinaru Kane ga Hibiku Yoru
 * Otome Pasta ni Kandou
 * Koi wo Shichaimashita!
 * Oujisama to Yuki no Yoru

Minimoni

 * Minimoni Jankenpyon! / Haru Natsu Aki Fuyu Daisukki!
 * Minimoni Telephone! Rin Rin Rin / Minimoni Bus Guide
 * Minihamus no Ai no Uta
 * Minimoni Hinamatsuri! / Mini Strawberry Pie
 * Ai~n Taisou / Ai~n! Dance no Uta
 * Genki Jirushi no Oomori Song / Okashi Tsukutte Okkasui~!
 * Minihamus no Kekkon Song

ZYX

 * Iku ZYX! FLY HIGH
 * Shiroi TOKYO

Morning Musume Sakura Gumi

 * Hare Ame Nochi Suki♥
 * Sakura Mankai

Aoiro 7

 * Aoi Sports Car no Otoko

7nin Matsuri

 * Summer Reggae! Rainbow

Sexy 8

 * Shiawase Desu ka?

11WATER

 * BE ALL RIGHT!

ROMANS

 * SEXY NIGHT ~Wasurerarenai Kare~

H.P. All Stars

 * ALL FOR ONE & ONE FOR ALL!

Ganbarou Nippon Ai wa Katsu Singers

 * Ai wa Katsu

Dream Morning Musume

 * Shining Butterfly

Singles

 * 1) [2009.03.25] Seishun Boku
 * 2) [2010.01.13] Kaze wo Sagashite

Solo Songs

 * [1999.03.31] Sentimental Minamimuki (センチメンタル南向き; Sentimental Facing South)
 * [1999.10.20] Seinaru Kane ga Hibiku Yoru (featuring Yaguchi) (聖なる鐘がひびく夜; Holy Bell Resounding through the Night) (Tanpopo cover)
 * [2001] Marine Sports! (マリーンスポーツ！) (Fanclub solo CD)
 * [2001.10.17] Show wo Yarimashou! (ショーをやりましょう!; Let's Do A Show!)
 * [2004.02.18] Furusato (ふるさと; Hometown) (Morning Musume cover)

Group Songs

 * [2001.10.17] Moukichi and Nyorota no Theme Song (モー吉&にょろ太のテーマソング; Moukichi and Nyorota's Theme Song) (with Abe Natsumi, Iida Kaori, Yoshizawa Hitomi, Kago Ai)
 * [2001.10.17] Dai Scoop (大スクープ; Big Scoop) (with Heike Michiyo, Abe Natsumi, Iida Kaori, Yoshizawa Hitomi, Ishikawa Rika)
 * [2001.10.17] Dekinai Koto wa Nai! (出来ないことはない!; There's Nothing I Can't Do!) (with Abe Natsumi, Iida Kaori, Yoshizawa Hitomi, Ishikawa Rika)
 * [2001.10.17] Hard Training (ハード トレーニング) (with Abe Natsumi, Iida Kaori, Yoshizawa Hitomi, Ishikawa Rika)
 * [2002.03.27] Hajimete no Rock Concert (初めてのロックコンサート; My First Rock Concert) (with Iida Kaori, Yasuda Kei, Goto Maki, Tsuji Nozomi, Ogawa Makoto)
 * [2003.03.26] Megami ~Mousse na Yasashisa~ (Original Long Ver.) (女神 ~Mousseな優しさ~; Goddess ~Kindness Like Mousse~) (with Venus Mousse)
 * [2003.03.26] "Sugoku Suki na no ni…ne" (「すごく好きなのに...ね」; "Even Though I Really Like You...") (with Iida Kaori, Abe Natsumi, Yasuda Kei, Ishikawa Rika, Yoshizawa Hitomi)
 * [2004.05.28] Do it! Now (Morning Musume cover; with Ishikawa Rika, Ogawa Makoto)
 * [2004.09.14] Summer Night Town (サマーナイトタウン) (Morning Musume cover; with Ishikawa Rika, Tanaka Reina)
 * [2004.12.04] Ii Koto Aru Kinen ni Shukan (いいことある記念の瞬間; The Moment I Remember When Something Good Happened) (with Fujimoto Miki, Michishige Sayumi)
 * [2004.12.08] Haru no Uta (春の歌; Spring's Song) (with Iida Kaori, Ishikawa Rika, Yoshizawa Hitomi)
 * [2011.04.20] Roman ~MY DEAR BOY~ (浪漫～MY DEAR BOY～; Romance ~My Dear Boy~) (Morning Musume cover; with Abe Natsumi, Yasuda Kei, Yoshizawa Hitomi, Ogawa Makoto)
 * [2011.04.20] Morning Coffee (2011 Dreamusu Ver.) (Morning Musume cover; with Nakazawa Yuko, Iida Kaori, Abe Natsumi,Yasuda Kei)
 * [2011.04.20] SEXY BOY ~Soyokaze ni Yorisotte~ (Morning Musume cover; with Nakazawa Yuko, Iida Kaori, Abe Natsumi, Yasuda Kei)
 * [2018.02.07] WE ARE LEADERS! ~Leader tte no mo Tsurai Mono~ (with Nakazawa Yuko, Iida Kaori, Yoshizawa Hitomi, Fujimoto Miki, Takahashi Ai, Niigaki Risa, Michishige Sayumi, Fukumura Mizuki)

Compilations

 * [2009.12.02] Petit Best 10 (#17 Seishun Boku)
 * [2014.01.01] Hello! Project no Zenkyoku kara Atsumechaimashita! Vol. 2 (ハロー!プロジェクトの全曲から集めちゃいました! Vol.2 吉田豪編) (#18 Hitoribocchi no Heya)

Solo DVDs



 * [2003.07.16] Love-Hello! Yaguchi Mari DVD

Group DVDs

 * [2006.11.22] Alo-Hello! Yaguchi Mari & Tsuji Nozomi DVD

Solo Photobooks

 * [2002.02.07] Yaguchi (ヤグチ )
 * [2003.06.31] Love-Hello! Yaguchi Mari (ラブハロ！矢口真里)
 * [2004.06.12] OFF
 * [2011.02.xx] CECILBOOK

Digital Photobooks

 * [2006.06.20] Love Hello! Mari Yaguchi INSIDE (ラブハロ!矢口真里INSIDE)
 * [2006.11.18] Love Hello! Mari Yaguchi OUTSIDE (ラブハロ!矢口真里OUTSIDE)

Group Photobooks

 * [2003.09.??] Pocket Morning Musume. 〈Volume 2〉 (ポケットモーニング娘. 〈Vol.2〉) (With Abe Natsumi, Goto Maki, Iida Kaori)
 * [2004.11.17] Alo-Hello! Morning Musume (アロハロ!モーニング娘. 写真集)

Essay Books

 * [2003.10.10] Oira - MARI YAGUCHI FIRST ESSAY (おいら―MARI YAGUCHI FIRST ESSAY)
 * [2007.06.25] Chicchai Yaguchi Mari no Dekkai Anata ni Ai ni Iku no da!! (ちっちゃい矢口真里のでっかいあなたに会いに行くのだ!!)

Records

 * Sources from 矢口真里
 * All Night Nippon's youngest and shortest radio personality.
 * Yaguchi Mari's All Night Nippon SUPER!'s achieved 100% middle-school male students listener rating
 * Love Hello! Yaguchi Mari DVD was the best-selling Idol DVD in Japan

Movies

 * [1998] Morning Cop (モーニング刑事)
 * [2000] Pinch Runner (ピンチランナー)
 * [2002] Nama Tamago ( ナマタマゴ)
 * [2002] Minimoni the Movie Okashi na Daibouken!
 * [2003] Koinu Dan no Monogatari (子犬ダンの物語 )
 * [2006] One Piece The Movie: Episode of Alabasta: The Desert Princess and the Pirates (ONE PIECE エピソードオブアラバスタ 砂漠の王女と海賊たち) (voice acting)
 * [2008] Average (アベレイジ)
 * [2009] One Piece Film: Strong World (ONE PIECE FILM　ワンピースフィルム　STRONG WORLD) (voice acting)
 * [2010] Hoshisuna no Shima no Chiisana Tenshi ~Mermaid Smile~ (星砂の島のちいさな天使～マーメイド　スマイル)

TV Shows

 * [2000] Morning Musume no Heso (モーニング娘. のへそ)
 * [2000] Friday Night wa Onegai! Morning (フライデーナイトはお願い!モーニング)
 * [2000-2007] Hello! Morning (ハロー!モーニング)
 * [2002-2004] TinTin TOWN (ティンティンTOWN!)
 * [2004-2007] Yaguchi Hitori (やぐちひとり)
 * [2004] Futarigoto (二人ゴト)
 * [2006-2007] Kanrui! Jiku Times (感涙!時空タイムス) (Discontinued)
 * [2007-2009] Yaguchi Hitori Maru C (やぐちひとり(C))
 * [2007] Uta Doki! ~Pop Classics~ (歌ドキッ! 〜ポップクラシックス〜)
 * [2007] Hasshin! Jiku Time (発進!時空タイムス)
 * [2007-2008] MIDTOWN TV Official website
 * [2007] Chao.TV Official website
 * [2008-2010] Sekai wo Kaeru 100-nin no Nihonjin! JAPAN☆ALLSTARS (世界を変える100人の日本人! JAPAN☆ALLSTARS)
 * [2009-2010] Yogaku Style (ヨーガク・スタイル) (Narration)
 * [2009-2011] How to Monkey Baby! (How to モンキーベイビー!)
 * [2010-2011] Amai na! (あいまいナ!)
 * [2010-2013] Seishun Real (青春リアル)
 * [2010-2011] Kono Nihonjin ga Sugoirashi. Brand New Japan (この日本人がスゴイらしい. Brand New Japan)
 * [2010] Go! Bungee Police (出動！バンジーP)
 * [2011] Zaki Kami! ~Zakiyama-san to Yukai na Nakamatachi~ (ザキ神っ！～ザキヤマさんとゆかいな仲間たち～)
 * [2011] Kiwameru! Yaguchi Mari no Kutsu Gaku (極める!矢口真里の靴学)
 * [2011-2013] Tokyo Disney Resort My Map! (東京ディズニーリゾート My マップ!)
 * [2012-2013] Hirunandesu! (ヒルナンデス!) (Friday regular)
 * [2013] Go Go Suma -GO GO!Smile!- (ゴゴスマ -GO GO!Smile!-)
 * [2013] Fukushima wo Zutto Miteiru TV (福島をずっと見ているTV)
 * [2013] Job Tune Ano Shokugyo no Himitsu Butchakemasu! (ジョブチューン アノ職業のヒミツぶっちゃけます!)

TV Dramas

 * [2002] Mikeneko Holmes no Hanzaigaku Kouza (三毛猫ホームズの犯罪学講座)
 * [2002] Liliput Oukoku (リリパット王国) (Voice actor)
 * [2003] Kochira Hon Ikegami Sho (こちら本池上署 ) (One episode guest appearance only)
 * [2006] Sentou no Musume!? (銭湯の娘!? )
 * [2006] Gal Circle (ギャルサー )
 * [2012] ATARU CASE06
 * [2016] Budokan (武道館)

Anime

 * [2001] Hamtaro Movie 1: Adventures in Ham Ham Land (voice of Gu)
 * [2002] Hamtaro Movie 2: The Captive Princess (voice of Gu)
 * [2003] Hamtaro Movie 3: Miracle in Aurora Valley (voice of Gu)
 * [2009] ONE PIECE
 * [2011] Digimon Xros Wars (デジモンクロスウォーズ?)

Commercials

 * [2000] Glico Mousse Pocky
 * [2009] Nintendo
 * [2009] MOSDO!
 * [2010] Ameba Pigg
 * [2010] Net DE Arima Kinen
 * [2012] Nihon Kentucky Fried Chicken
 * [2012] Zeria

Theater

 * [2013] Ikinuku Kiseki ~Juu Nenme no Negai~ (イキヌクキセキ〜十年目の願い〜)

Trivia

 * Yaguchi was the first Morning Musume member to "resign" due to a scandal. She received no graduation concert or final performances because of this, but she made it clear that she would return as a solo artist in 2006.
 * She was famous for her "Sexy Beam!" line from "Koi no Dance Site" and she was asked jokingly in the Morning Musume single Joshi Kashimashi Monogatari, "When will your real sexy beam come out?" The "Sexy beam!" line has made its way around fans and fellow musicians alike.
 * After being out of Morning Musume for a time, she often came out and discussed how Tsuji Nozomi terrorized her in Minimoni and Morning Musume and also said whenever she sees her cry, even to this day, she was not affected by it and thinks she is faking.
 * She is known for her exuberant and irreverent personality.
 * She was also famous for being the smallest member of Morning Musume at only 145 cm (4 ft. 9 in.) and 39 kg (86 lbs.).
 * She was a member of Tanpopo, one of the first sub-groups, and also founded Minimoni. She was also the leader of ZYX and Morning Musume Sakura Gumi, after Abe Natsumi graduated.
 * When she resigned from Morning Musume, she was the last person to leave that joined before the year 2000 (Iida Kaori had left about 2 months before).
 * Her new focus on television prompted Yaguchi, during an interview with actor Hugh Jackman, to jokingly describe herself as a "variety idol." Although she later regretted the joke — because she tried to distance herself from her idol image — the nickname has stuck among her fans.
 * She was the sixth former Morning Musume member to get married, the first being Ishiguro Aya, second being Ichii Sayaka, third being Iida Kaori, fourth being Tsuji Nozomi, and fifth being Fujimoto Miki.
 * Her short height has been proven to help her in many situations.
 * She went on a trip to Iceland to film "What is a Japanese Woman Doing Here?" along with Abe Natsumi.
 * She was a fan of the American TV show Glee and her favorite character was Finn Hudson.
 * When on a trip to Russia, she got into a taxi and the driver drove off without the staff. The staff had to chase down the taxi to get her back.
 * When on a trip to Russia, she made Matryoshka dolls representing each Morning Musume member.
 * She was the second former Morning Musume member to be divorced. The first former Morning Musume member to divorce was Ichii Sayaka, who was from the same generation as her.