For more details about Omori Seiko's career, please visit her page on the Jpop Wiki.
Omori Seiko
Omori Seiko, March 2017
Background Information
Born September 18, 1987 (1987-09-18) (age 30)
Origin Matsuyama, Ehime, Japan
Zodiac Sign Virgo Virgo
Genres J-pop
Occupation Singer-songwriter, guitarist, keyboardist
Years Active 2008–present
(10 years)
Label PINK RECORDS (2012-2014)
avex trax (2014-present)
Associated Acts Omori Seiko & THE Pink Tokarev
Twitter 12px-Twitter_bird_logo_2012.svg.jpg @oomoriseiko

Omori Seiko (大森靖子) is a Japanese singer-songwriter who began her career in 2008. She is also the former lead singer, guitarist, and keyboardist for the band Omori Seiko & THE Pink Tokarev.

She is a fan of Hello! Project and Michishige Sayumi in particular,[1] and she has written songs for various UP-FRONT GROUP artists since 2014.


Omori Seiko was born on September 18, 1987 in Matsuyama, Ehime, Japan.[2] Her father was a civil servant and her mother was a teacher.[3]

Omori loved singing since she was a child and often imitated SPEED, Morning Musume, and Hamasaki Ayumi when she saw them on TV, but she did not believe she could become a singer if she was not cute.[4] When Omori entered elementary school, her parents enrolled her in painting, calligraphy, and piano lessons. She then went to a private middle school and high school, where she was bullied and distanced by others for being strange.[3] Omori graduated from high school in 2006 and decided to enter Musashino Art University in Tokyo.[4]

When she was 19, Omori came across the live house Muryoku Muzenji, which showed her the way of music and allowed her to express her interests without judgement.[3][4] She eventually quit university in 2007 to instead pursue a music career.[2]

In 2011, in addition to performing solo, Omori formed a band with a four others named Omori Seiko & THE Pink Tokarev. They disbanded on May 12, 2015.[5][6]

In 2014, Omori made her major debut under avex trax on March 14[7] and also began writing songs for other artists.

In August 2014, Omori got married. On October 10, 2015 she gave birth to her first child, a son weighing 3082 grams.[8]


  • Birth Name: Omori Seiko (大森靖子)
  • Birth Date: September 18, 1987 (1987-09-18) (age 30)
  • Birthplace: Matsuyama, Ehime, Japan
  • Zodiac: Virgo Virgo

Song CreditsEdit


Kikkawa YuuEdit

Michishige SayumiEdit

Morning Musume 20thEdit

Up Up Girls (Kari)Edit



External LinksEdit