The original 2013 Gundam Build Fighters has four TV themes. BACK-ON performs both openings, “Nibun no Ichi” and “wimp ft. Lil’ Fang (from FAKY).” The ending themes are AiRI’s “Imagination > Reality” and Hyadain’s “Hanpan Spirit.”
All four opening and ending themes
| Use | Song | Artist |
|---|---|---|
| Opening 1 | Nibun no Ichi (ニブンノイチ) | BACK-ON |
| Ending 1 | Imagination > Reality | AiRI |
| Opening 2 | wimp ft. Lil’ Fang (from FAKY) | BACK-ON feat. Lil’ Fang |
| Ending 2 | Hanpan Spirit (半パン魂) | ヒャダイン / Hyadain |
The credits and song order follow Sunrise’s official soundtrack listing.
First opening and ending | “Nibun no Ichi” and “Imagination > Reality”
Sei builds Gunpla with great care, while Reiji shows a gift for piloting the first time he joins a battle. In its track notes, BACK-ON describes their ability to make up for each other’s weaknesses as the starting point for “Nibun no Ichi.” Listen to it alongside AiRI’s guitar-driven “Imagination > Reality” to hear the two songs that frame the early part of the series.
Second opening and ending | “wimp” and “Hanpan Spirit”
BACK-ON returns for the second opening, joined by Lil’ Fang of FAKY. The added voice changes the texture of the chorus, making this an easy track to identify by ear. Hyadain sings the second ending, written 半パン魂 and read “Hanpan Spirit.”
Avex’s official “wimp” video announcement · Avex’s official “Nibun no Ichi” live video announcement
Songs from Try, GM’s Counterattack and Build Divers
“Cerulean” and “Amazing the World” are the first opening and ending of Gundam Build Fighters Try. BACK-ON’s “Carry on” is the theme of GM’s Counterattack. “Gunpla World,” performed by Kirara (Aoi Yuki), is an insert song in the 2013 series.
The track “INFINITY” on BACK-ON’s “Nibun no Ichi / INFINITY” single is a game theme. SWANKY DANK’s similarly titled “Infinity” belongs to the 2018 Gundam Build Divers TV series.
Which CD has the songs you want?
For all four songs plus Kirara’s insert song on one disc, look for disc one of the 10th-anniversary collection. For the show’s score and the anime edits, look for the 2014 soundtrack. BACK-ON’s RELOAD has both openings as tracks one and four.
A three-disc 2023 release (SRML-1061–3). Disc 1 starts with the four TV themes, followed by Kirara’s insert song.
Search for this release on Amazon JapanTwo CDs from 2014 (AVCD-38914–5), with 50 Yuki Hayashi score tracks, the four anime edits and Kirara’s insert song.
Search for this release on Amazon JapanContains “Nibun no Ichi” and “wimp.” The CD + DVD edition also includes the “Nibun no Ichi” music video.
Search for this release on Amazon JapanSources
Sunrise’s first opening and ending announcement · Sunrise’s second ending announcement · BACK-ON’s “Nibun no Ichi” track notes
TV Tokyo’s character and Gunpla profiles · BACK-ON’s anniversary track list
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