Rainbows (Alice Nine song)

The title track was conceptualized by bassist Saga during a period in which the band members were creating songs without an overall motif. An early version of "Rainbows" was chosen out of a total of 17 songs from this period.

Saga mentions in an interview with Shoxx Magazine that the song's early sound had strong electronic influences at first, which faded as the band introduced and increased live instrumentation during production. Another characteristic that contributed to a more mechanical sound was a drum loop, but this was eventually replaced with live drum work as well.

For the lyrics, vocalist Shou envisioned an image of the band playing in a laser beam-filled disco after listening to the demo tape and created the theme of "shouting strongly from the darkness to the light" from there. The symbol for this theme was eventually realized as a rainbow.

Guitarist Hiroto handled songwriting duties for the following songs on the single, with different approaches to each. "Strawberry Fuzz" came to life as a song that he wanted to perform live, while "Kochouran" pushed him to search for female vocals, bringing an R&B feel to the song.

The titles for each song came about as themes pervading their lyrics. Shou explains the title of "Strawberry Fuzz" as a symbol for the embarrassment that a person experiences when they begin to pursue a dream. He chose the color pink to represent this, which in turn led to the word "strawberry." The "fuzz" of the title refers to hiding this intent from others. For "Kochouran," he elaborates that the theme is "people’s weaknesses and inferiority complexes about beauty," which came to be represented by flowers and butterflies.[2]