[2] On 1 October 2008, the band released a download single named "Hana ni Nare" (花になれ, "Become a Flower").

[3] In 2002, Yamamura, along with his childhood friends, Sakai and Amakawa, formed an acoustic unit named 309.

On 24 July, the production of an independent single titled "Mirai Kanai" (ミライカナイ, "One's Future") was announced.

On 27 August, both Tower Records and Tsutaya held the 5,000 limited copies of the independent trial single, "labo".

On 1 September, they became the Campaign Song Artist for the telephone service, au KDDI "LISMO".

On October 1, they released "Hana ni Nare" (花になれ, "Become a Flower") as their first digital single with Amuse, Inc. under the newly created sub-label A-Sketch.

Later in that month, the band released their first major single, "Hoshi ni Negai o" (星に願いを, "Wish Upon A Star") and reached No.

It was made known on 29 April that flumpool's vocalist, Ryuta Yamamura would undergo polypectomy in June.

", flumpool's corner of the radio program TOKYO FM's SCHOOL OF ROCK!, that he will undergo polypectomy after their last concert of the third tour in Okinawa and spend about a month resting.

The band released their fourth major single entitled "reboot~Akiramenai Uta~/Nagareboshi" (reboot～あきらめない詩～／流れ星, "reboot~Don't Give Up Song~/Shooting Star") on 23 June.

The release is limited to the members of POOLSIDE, the band's mobile fan club.

This first time ever members limited release is a premium package which includes a Special DVD encompassing flumpool's "gratitude" and an original calendar (2011).

They expressed their gratitude to their fans for staying with them in the year since the opening of POOLSIDE by turning the words they can't convey very well into this song.

On 31 December, flumpool attended the 61st NHK Kōhaku Uta Gassen, performing on the show for the second time.

flumpool held a live tour with rock band, Nico Touches the Walls in January in 3 cities.

The title of the album, Fantasia of Life Stripe was revealed through a CM, aired on 28 November 2010.

The band were in charge of the set piece for the Junior High School section of the 78th NHK National Music Contest.

In the aftermath of the 11 March earthquake and tsunami in Japan, the band's members and their record label A-Sketch made a donation of 10 million yen to the Japanese Red Cross as part of the fund raising campaign by their agency Amuse.

In June, flumpool's vocalist, Ryuta Yamamura appeared solo in the CM for the mobile game site "Mobage".

In September 2014, Flumpool makes a Single for Indonesian Tokusatsu Series Satria Garuda BIMA-X titled 'Let Tomorrow be'.

Vocalist Ryuta Yamamura was diagnosed with functional vocal disorder, forcing him to stop his activities and seek treatment.

[6] On Aug 24, 2024, flumpool performed at Super Slippa 13, a music festival held at the Taipei Arena.

Vocalist Ryuta also collaborated with GLAY's Teru and Mayday to perform the song OAOA.