(born June 13, 1968, in Fukuoka, Fukuoka Prefecture, Japan), better known by her stage name is a female Japanese singer and tarento. Moriguchi is affiliated with the talent agency NoReason Inc., where she also serves as Second Production Department Manager.
The youngest of four sisters, lived with her mother after her parents divorced when she was eight years old. She graduated from Fukuoka City Takamiya Junior High School and Fukuoka Prefectural Fukuoka Chuo High School, then transferred to Horikoshi High School Performing Arts Course. Her classmates included YÃ Âko Oginome, Kumiko Takeda, Miyuki Imori, Sayuri Iwai, Eri Murata, and Mie Takahashi. As a teenager, Hanamura performed as a backing singer in the Tokyo Music Academy performing arts group . Before graduating from high school, she participated in several variety shows and quiz programs, also unsuccessfully auditioning for several idol singer competitions. Hanamura adopted the stage name "Hiroko Moriguchi" as a nod to musician Masaaki Hirao and female golfer Yuko Moriguchi.
After finishing second place in NHK's , Moriguchi signed with King Records and released her debut single "Mizu no Hoshi e Ai wo Komete", the second opening theme for the anime TV series Mobile Suit Zeta Gundam. The song reached No. 16 on Oricon's charts; her follow-up songs, however, failed to achieve the same success. In 1987, Moriguchi recorded the song to promote the Kirin Lemon Whity drink. While the beverage sold well in Japan, the song did not make the Top 100 chart.
In 1988, Moriguchi recorded the song , the second opening theme for the anime series Yoroiden Samurai Troopers. That same year, Moriguchi also released her first gravure idol book and video ; her second gravure book, Wow!, was released in 1990.
In 1991, Moriguchi recorded for the anime film Mobile Suit Gundam F91. The song reached No. 9 on Oricon's charts and stayed in the Top 100 for 27 weeks. It also placed 47th in Oricon's annual ranking and consistently placed in NHK's KÃ Âhaku Uta Gassen for six consecutive years, making it her biggest hit. She also recorded songs for the Fuji TV variety show and was a mainstay during its run from 1992 to 1995. In 1995, an arcade game featuring Moriguchi called was released. She released her third gravure book, Cool, in 1997. Throughout the 1990s, Moriguchi appeared in television commercials for companies such as Kao Corporation, National, Daihatsu, and Asahi Breweries.
In 2003, Moriguchi played Hiroko in the NHK TV series and made appearances in the TBS series . In 2005, she was appointed as general manager of the Japan Amateur Baseball Association team . However, she and co-manager Nobuyuki Kagawa resigned following a reorganization of the team, which has since been renamed .
On February 28, 2012, Moriguchi joined Yoko Minamino and Tomomi Nishimura to form the trio "Blooming Girls". Their debut single "Knock!! Knock!! Knock!!" peaked at No. 66 on Oricon's singles charts on June 13. In 2015, Moriguchi released the single to commemorate her 30th anniversary in the music business. Since 2017, Moriguchi has been a participant in Nippon BS Broadcasting's , held every New Year's Eve.
Moriguchi released Gundam Song Covers on August 7, 2019, to commemorate the 40th anniversary of the Gundam franchise. The album reached No. 3 on Oricon's Weekly Album Chart on August 16, making it her first top-10 album since 1991's Eternal Songs. On November 16, 2019, the album was announced as one of six recipients of the Planning Award at the 61st Japan Record Awards, which was held on December 30. Moriguchi's follow-up album Gundam Song Covers 2 was originally planned for release on June 10, 2020, but due to the ongoing COVID-19 pandemic, the release date was pushed to September 16, 2020.
In June 2021, Moriguchi announced the release of her 35th anniversary album on August 4. It was her first original studio release since her 1997 album Happy Happy Blue. Moriguchi also hosted a special concert at the Tokyo International Forum Hall C on October 3. In December 2021, Moriguchi announced the release of Gundam Song Covers 3 on March 9, 2022.
Following the release of Gundam Song Covers 3, Bandai Namco announced that Moriguchi would record "Ubugoe" as the theme song of the film '. "Ubugoe" peaked at No. 10 on Oricon's charts, becoming her first top-10 since "Whistle" in 1993.
On March 4, 2023, Moriguchi announced the release of Anison Covers on May 24, an album featuring her covers of popular anime theme songs from the 1980s and 1990s.
In February 2024, Moriguchi, along with Yu Hayami and Iyo Matsumoto, released the single "Soro soro fuyu desu nee" (ãÂÂãÂÂãÂÂãÂÂ勧ãÂÂãÂÂã§, It's almost winter, isn't it?) as part of the concert unit CutieâÂÂMoriMori, which she joined in 2017, replacing original member Chiemi Hori. The single was produced by Noritake Kinashi and written by George Tokoro. It was billed under each singer's individual discography, particularly on RecoChoku and Apple Music.
On August 7, 2025, as part of her 40th anniversary celebration, Moriguchi announced the release of the studio album on December 3. The album featured collaborations with Kaori Kishitani, Naoto Kine of TM Network, Yukie Nishimura, and Aki Hata. In addition, the album included a new song composed by Neil Sedaka, marking his first collaboration with Moriguchi since "Mizu no Hoshi e Ai wo Komete" in 1985.
Moriguchi currently co-hosts the variety show ' alongside singer/songwriter Mikio Sakai on BS11. She is also the host of her own radio show Kiss & Smile on Bay FM 78.
During the 1990s, Moriguchi suffered from cold sensitivity. Starting in 2000, she changed her diet and sleeping habits to remedy her condition.