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!
- FLOW Popular Songs Ranking [2026]
- [Anison × Rock] A compilation of anime songs performed by rock bands
- FLOW’s Support Songs and Popular Tracks Ranking [2026]
- Anisongs that were hits in the 2000s: a nostalgic collection of legendary tracks
- BGM from anime with absolutely divine music! Highly popular anime songs
- FLOW's Graduation Songs, Entrance Ceremony Songs, and Popular Tracks Ranking [2026]
- FLOW Karaoke Popular Songs Ranking [2026]
- Roselia’s iconic songs. Recommended track list.
- Masterpieces and popular songs by flumpool
- [Anison] A collection of anime theme songs by girls’ bands
- Moving and iconic anime songs, popular tracks
- ONE OK ROCK’s classic and recommended popular songs
- MY FIRST STORY's famous songs and recommended popular tracks
The Kings of Rock and Anison! A roundup of FLOW’s popular songs (1–10)
Thank youFLOW
Announced with the tagline “FLOW’s first-ever classic ballad single, proudly complete!!!” and selected as the ending theme for the variety show ‘Uchi Kuru!?’, this is the band’s 14th major-label single.
True to the tagline, it marks their first ballad released as a single.
Featuring the gentle timbre of acoustic guitar and strings paired with beautifully harmonized vocals, it’s an outstanding ballad.
With lyrics that straightforwardly express gratitude we should convey in our everyday lives, this track truly deserves to be called a classic ballad single.
Re:memberFLOW
Announced with the punchy, determined catchphrase, “FLOW’s 2006 is kicking off right now!!!!!!!,” this is their ninth major-label single.
Used as the opening theme for the TV anime Naruto, the track carries a powerful energy that matches the show’s atmosphere.
Alongside FLOW’s signature catchy melodies and band sound, the uplifting choruses in the intro and interlude make it a rock tune that’ll have you raising your fist and singing along before you know it.
Steppin’ outFLOW
This is their 30th major-label single, chosen as the opening theme for the independent UHF anime Durarara!!×2 Ketsu.
It’s a dance track defined by a thrilling structure in which the rhythm shifts rapidly—adding Latin grooves in the chorus, suddenly switching to 3/4 time, and more.
In contrast, the guitar solo features a melodious, catchy, rock-like phrase, creating an addictive, unpredictable progression that evokes a swapping of unreality and reality—mirroring the anime itself.
King of Rock Anison! A roundup of FLOW’s popular songs (11–20)
BlazBlueFLOW
This is their 24th major single, released in 2012 with the tagline, “FLOW’s 10th anniversary! A danceable rock tune with maximum bittersweetness is here!” Used as the opening theme for the TV anime Eureka Seven AO, the song delivers exactly what the catchphrase promises: a danceable, off-beat rhythm paired with a wistful, unforgettable melody line, resulting in a compelling rock number.
The arrangement is also outstanding, striking a balance between melodicism and playfulness—such as the guitar riff that incorporates tapped phrases in the backing.
RealizeFLOW
A track included on their third album, Golden Coast, which was chosen as the theme song for the video game Eureka Seven TR1: NEW WAVE.
Originally, it was a song created based on vocalist KOHSHI’s experiences during a personal trip to India, but it later became a tie-in after the game’s staff took a liking to it.
With melodies and structure that showcase the appeal of the twin vocals, and a straightforward, fast-paced band sound, it’s a rock tune that instantly lifts your spirits from the first listen.
United SparrowsFLOW
“United Sparrows,” the theme song for the anime Back Arrow.
FLOW reportedly wrote it specifically for the anime’s ending theme, approaching the production with an emphasis on a gentle warmth that would embrace viewers after each episode.
Its expansive melody and forward-looking lyrics that give you a push are striking, resulting in a captivating track that showcases the unique touch of a band seasoned in creating anime songs.
The performance—radiating a fresh yet grand atmosphere—is also memorable, and the calm, moving mood it evokes is a standout.
INNOSENSEFLOW
This is the 32nd major single, chosen as the ending theme for the TV anime Tales of Zestiria the X.
The intro, which prominently features strings and rousing chorus lines that heighten the tension, was born from the anime producer’s request for a song that evokes an “unending battle.” While the track exudes a majestic atmosphere with strings used throughout, it fuses FLOW’s signature melodious vocals with a robust rock sound, resulting in a dramatic number.