Flower is a Japanese pop girl group formed by LDH in 2009 and signed to Sony Music Japan. They are a dance and vocal unit of collective girl group E-girls alongside Dream and Happiness. The group consists of one vocalist and five performers.
Flower was formed first as a performance group, with LDH recruiting four dancers: Elina Mizuno, Manami Sigetome, Mio Nakajima, and Shuuka Fujii in 2009. They began appearing in Exile music videos and modeling, before amassing popularity as backup dancers for Exile during their 2010 Live Tour alongside sister groups Dream and Happiness.
LDH held a national search for new group members in February 2011 titled "Exile Presents Vocal Battle Audition 3: For Girls", which led to the addition of Nozomi Bando and Harumi Sato, along with three vocalists, Reina Washio, Kyoka Ichiki, and Chiharu Muto.
As a nine-member group, Flower released their debut single, "Still", on October 12, 2011. The single charted at number 5 during the first week of release, and remained on the chart for several weeks. In November 2011, Flower was confirmed to be joining sister groups Dream and Happiness in the collective group E-girls. Flower continued to release several singles throughout 2012 alongside promoting as members of E-girls.
In June 2013, company LDH confirmed the group would be participating in a competition with sister group Happiness in which both groups would release their singles on the same day, and the winner of the competition would have one of their songs feature as a B-side on a future E-girls' single. Flower won the competition, and their song "Hatsukoi" was included in E-girls' single "Gomennasai no Kissing You".
Leader Elina Mizuno announced her official withdrawal from Flower and E-girls on October 18, 2013, citing her focus on her acting career. Shigetome Manami replaced her as leader of Flower following her departure.
The group announced the release of their first album, self-titled for release on January 22, 2014.
On October 12, 2014, Chiharu Muto officially announced her withdrawal from both E-girls and Flower, deciding to study abroad. The group released their eighth single, "Akikaze no Answer", following this, being the last single to include Muto. Flower announced the release of their second album, Hanadokei (花時計), on February 3, 2015, to be released on March 4, 2015, less than a month after the release of their double A-side single "Sayonara, Alice / Tomorrow Tomorrow: Shiawase no Hosoku".
They released their eleventh single "Blue Sky Blue" on April 29, 2015.
On October 7, 2015, Kyoka Ichiki officially announced her withdrawal from both E-girls and Flower.Flower Live Tour 2015 "Hanadokei" (June 2015, Sapporo, Tokyo, Nagoya, Osaka, Fukuoka)