Yaguchi Mari (矢口真里) is a japanese singer and Talento.
- Married Name Nakamura Mari (中村真里)
- Nicknames: Marippe (まりっぺ), Yagu-chan, Yaguttsuan (やぐっつぁん), Yaguchorina and Oya-bin
- Date of Birth: January 20, 1983
- Place of Birth: Yokohama, Kanagawa Prefecture, Japan
- Blood Type: A
- Height: 145cm
- Family: Ex husband Nakamura Masaya
- Bands / Groups:
- Concerts Units
- Hello! Project Akagumi (2005)
Early on in the group Yaguchi was often perceived as being "the short one" as she did not stand out a lot, but by the time 4th generation joined she had become one of the most active members of the group. Her most famous phrase is "Sexy Beam!" one of her solo lines from Morning Musume's "Koi no Dance Site" single, and she was asked jokingly in 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.
Yaguchi became Morning Musume's sub-leader in May 2003, after the graduation of Yasuda Kei. After the graduation of Iida Kaori in January 2005, Yaguchi became leader and Yoshizawa Hitomi would support her as sub-leader. However in April 2005, 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. Yaguchi and Oguri have reportedly broken up since April 2006.
When she graduated from Morning Musume she was the last person to join before the year 2000 (Kaori Iida had left nearly 2 months before), and she currently has the eighth longest tenure of any member, with Niigaki Risa, Michishige Sayumi, Tanaka Reina, Takahashi Ai, Kamei Eri, Iida Kaori, and Yoshizawa Hitomi being in the group longer.
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 100 Kaibun Aishitekudasai". Although she continues to appear on television and at live events on behalf of Hello! Project. She also co-hosts two weekly TV shows of her own (Yaguchi Hitori and Kanrui! Jikuu Times), has starred in two dramas, and frequently guest stars on other variety shows.
This 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 has tried to distance herself from her idol image — the nickname has stuck amongst her fans. At the start of 2007, she has started to sing during Hello! Project concerts again.
Yaguchi was the drama queen in a Japanese drama series called Sento no Musume'. Yaguchi was also one of the main stars in a Japanese day time drama series called Gyarusa along with her show Yaguchi Hitori, and MCing Hello! Project concerts. From May 25, 2007 and up to June 6, 2007, Yaguchi performed in "Damn Yankees", a popular 1955 Broadway musical at the Tokyo Aoyama Theater.
In the summer of 2007, Yaguchi was casted to host a new Gyao TV show, "Midtown TV", becoming her third T.V.-show on air. "Midtown TV" airs all weekdays and Yaguchi hosted it on Thursdays. Also, Mari and seven H!P Eggs are scheduled to appear live and with audience on "Ciao TV", a Kids Station show, on 09/02, 19h~19.30h, on what appears to be yet another TV show. With that commencing, Yaguchi will be in four TV shows being aired simultaneously.
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.
It was announced on October 19, 2008, on the official Hello!Project website, that Yaguchi will graduate from the Elder Club & Hello!Project all together on March 31st, 2009.
Yaguchi Mari's debut solo single is a collaboration with the TV show Quiz Hexagon, which has brought us the popular groups Pabo and Shuchishin. This will be the first solo release from Mari. The single is also a collaboration with Airband, and includes a randomly chosen photo card of either Mari or Airband. In December, Yaguchi became a member of Dream Morning Musume.
Yaguchi married actor Masaya Nakamura in May 2011. But in 2013, they divorced.
- [2009.03.25] Seishun Boku / Seishun Ore (青春僕/青春俺) (Yaguchi Mari & Airband)
- [2010.01.13] Kaze wo Sagashite (風をさがして) (Yaguchi Mari to Straw Hats)
-  Morning Cop (モーニング刑事)
-  Pinch Runner (ピンチランナー )
-  Nama Tamago (ナマタマゴ)
-  Mini Moni ja Movie: Okashi na Daibouken!
-  Koinu Dan no Monogatari (子犬ダンの物語)
-  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)
-  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 Dramas
-  Kochira Hon Ikegami Sho (こちら本池上署)
-  Sentou no Musume!? (銭湯の娘!?)
-  Gal Circle (ギャルサー)
- TV Programs
-  Yaguchi Hitori Maru C (やぐちひとり(C))
-  Kanrui! Jikuu Times (感涙！時空タイムス)
-  MIDTOWN TV
-  Chao.TV
- [2010-2011] Amai na! (あいまいナ!)
- [2010-] Go! Bungee Police (出動！バンジーP)
-  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～)
- [2016–] Yaguchi Mari no Kayō The NIGHT
-  Ikinukukiseki ~Juunenme no Negai~ (イキヌクキセキ～十年目の願い～)
- [2002.02.07] Yaguchi (ヤグチ)
- [2003.06.xx] Love Hello! Yaguchi Mari (ラブハロ！矢口真里)
- [2003.09.xx] Pocket Morning Musume. Volume 2 (ポケットモーニング娘。〈Vol.2〉) (With Abe Natsumi, Goto Maki, Iida Kaori)
- [2004.06.12] OFF
- [2003.10.10] Oira - MARI YAGUCHI FIRST ESSAY (おいら―MARI YAGUCHI FIRST ESSAY)
- [2007.06.25] Chicchai Yaguchi 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!!)
- Feet Size: 22cm
- Star Sign: Capricorn
- Talent Agency: Up-Front Works
- Favourite Colour: White (as of 9th August 2007)
- Disliked Colour: Purple
- Favourite Song: "When You Wish Upon a Star" (Pinocchio)
- Favourite Morning Musume Song: I WISH
- Favourite Flower: Sunflowers
- Favourite Food: Yakiniku, Bibimbap, cheese, rice, ice
- Favourite Sport: Table tennis, Badminton
- Disliked Food: Milk, liver, avocado, green peas
- Favourite Words: Happy, pure, "Full power!"
- Favourite Season: Winter
- Hobbies: Playing video games, cooking (just a little), collecting platform shoes
- Specialties: Making her mouth into the shape of a heart, fitting inside a boston bag
- Impersonations: Hamasaki Ayumi, Onitsuka Chihiro and Michael Jackson
- From the date she first joined (May 3, 1998) to the date she left (April 14, 2005), Yaguchi's tenure in Morning Musume lasted 2,538 days.
- All Night Nippon's youngest and shortest radio personality.
- Yaguchi Mari's All Night Nippon SUPER! achieved 100% middle-school male students listener rating.
- Love Hello! Yaguchi Mari DVD was the best-selling Idol DVD in Japan.