In September 2011, Sakanaction released their fifth studio album
Documentaly, which had reached number two on the Japanese
Oricon albums chart; the highest position achieved by the band in their career at the time. The album was strongly affected by the events of the
2011 Tōhoku earthquake and tsunami which had occurred in March of that year, during the promotional period for their single "
Rookie". The band's vocalist and songwriter
Ichiro Yamaguchi felt a new resolution to create music that would resonate with a general pop music audience, who listened to idol acts such as
Girls' Generation and
AKB48. As rock music was no longer a popular staple during the early 2010s in Japan, Yamaguchi felt that the reasons people listened to music had changed over time, and wanted to mix rock music with entertainment-focused music in order to give these people the type of music that they look for. The band were contacted by the promotions team of Mode Gakuen to write a commercial song for their 2012 advertisements in October, when the band had just begun performing their Sakanaquarium 2011 tour for
Documentaly. This was the first time the band had been asked to write a piece of music specifically for a purpose (though songs on
Documentaly had been used for commercial tie-ups, these had been organized after the songs had been completed). The band recorded the song after the tour finished, and planned to release it as a single at the beginning of 2012. However, while this was happening, the band were contacted to write a theme song for the
Tsuyoshi Kusanagi drama
37-sai de Isha ni Natta Boku: Kenshui Junjō Monogatari, In 2012, Yamaguchi was commissioned to write the song "
Moment" for the Japanese boy band
SMAP. Used as the theme music for the
Tokyo Broadcasting System Television broadcast of the
2012 Summer Olympics, for which SMAP member
Masahiro Nakai was the main sportscaster, the song was released as a single on August 1, 2012, and reached number one on
Oricon's weekly singles chart. == Writing and inspiration ==