King of Rock Anison! A roundup of FLOW’s popular songs
FLOW is a five-member rock band that has been active since 1998.
Rooted in mixture rock, their twin-vocal setup delivers captivating rap and harmonies!
Another essential point when introducing them is their many collaborations with anime.
They have provided theme songs for numerous anime over the years, earning immense popularity not only in the rock band scene but also in the anison (anime song) scene.
In this article, we’ll showcase a slew of masterpieces born throughout their career!
From fast-paced, cool tracks to melt-in-your-ears beautiful ballads, you won’t want to miss a single song!
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King of Rock Anison! A roundup of FLOW’s popular songs (11–20)
BlasterFLOW
A major-label debut track chosen as the theme song for a summer resort campaign.
Announced with the catchphrase “FLOW’s summer is here! Major debut single No.
1!”, the song lives up to both the tagline and the campaign with an exhilarating, summer-ready uptempo vibe.
Its twin-vocal, rapid-fire melodic structure and the flow from a call-and-response–oriented B-melody into a catchy chorus make it a guaranteed crowd-pleaser at live shows.
AnswerFLOW
Released as the first single commemorating the 5th anniversary of their major-label debut, this 12th major single was written specifically for the TV drama “Tantei Gakuen Q,” marking FLOW’s first-ever drama tie-in.
Beginning with a striking guitar riff intro and gradually building from a quiet opening toward the chorus, the structure carries a narrative quality that perfectly suits a drama’s theme song.
The melodious, slightly wistful chorus also mirrors the drama’s climactic moments, making this an outstanding track that vividly evokes its scenes.
5TELLANEW!FLOW
FLOW is a five-member mixture rock band with a fervent global following.
Released in January 2026 and chosen as the theme song for the arcade card game Mobile Suit Gundam Arsenal Base WAVECHOES, this track shines with a finely tuned interplay between twin vocalists that mirrors the game’s 5-on-5 battle system, stirring a sense of camaraderie that really fires you up.
It’s also surprising to learn that it was produced around the world—in places like Chicago and London—squeezed in between stops on their overseas tour, as if the heat of the journey was poured directly into the music.
The synth-driven, high-velocity sound is sure to steel your resolve before a make-or-break moment.
It’s an energetic rock tune that gives a powerful push to players heading into battle.
Words of FarewellFLOW
An indie third single that covers a song by the folk group Kaientai, centered around Tetsuya Takeda.
The original is known as the theme song for the beloved TV drama “Mr.
Kinpachi in Class 3-B,” but FLOW’s punk-styled arrangement turns it into an engaging number with a different charm from the original.
Despite the significant change in arrangement, none of the catchiness is lost, making it a cover that reaffirms the original’s beauty and excellence.
tone colorFLOW
Released in 2018, this song was used as the theme for the TV drama “A Little Room for Hope”.
Presented as a collaborative work with Anna Yamada, who stars in the drama, the track marks a new frontier for FLOW, who declared they would become a band that “breaks down genre boundaries.” Featuring guitars rich in cutting and arpeggios, along with bass and drums that drive the groove, it’s a number that reaffirms the breadth of FLOW’s musicality, unbound by any single genre or image.
CHA-LA HEAD-CHA-LAFLOW
The theme song for the theatrical film Dragon Ball Z: Battle of Gods, from the universally popular TV anime Dragon Ball that transcends generations and countries.
The original is a rock-inspired track, but in this version, the doubled drum beat for a sense of speed and the guitar-forward, heavyweight sound create an even more aggressive, high-energy arrangement.
With longer, sharper hits than the original and twin-vocal harmonies, this piece adds modern appeal to a classic that everyone knows.
King of Rock Anison! A roundup of FLOW’s popular songs (21–30)
Rainbow SkyFLOW
Released in 2015 as their 29th major single, this song was used as the ending theme for Naruto Shippuden.
It’s a rock number that blends FLOW’s signature style with the anime’s worldview, combining a powerful rock sound with a sense of melancholy.
Starting with a piano-forward, gently sung A section, it shifts into a driving rock tune in the B section and chorus.
This dynamic ebb and flow creates a rock track that evokes the story of the anime.