Sakanaction's singles for their album
Documentaly (2011), "
Identity" (2010), "
Rookie" (2011) and "
Bach no Senritsu o Yoru ni Kiita Sei Desu" (2011), were featured in commercials for the
yobikō Tōshin High School. The commercials utilized songs Sakanaction had personally wanted to release as singles, and were not written expressly for the commercials. This was unlike "
Yoru no Odoriko" (2012), a single by the band which had been specifically commissioned by Mode Gakuen for a commercial. In March 2013, Sakanaction released their sixth studio album
Sakanaction. The album was a result of the band's vocalist and songwriter
Ichiro Yamaguchi feeling a new resolution to create music that would resonate with a general pop music audience. The album debuted at number one on
Oricon's weekly albums chart, after selling 83,000 copies. This was a record for the band, both in terms of the number of copies that they had sold in one week of a release, as well as the fact that they had never reached number one on an Oricon chart before. After the release of
Sakanaction, Yamaguchi wanted to take an extended break, however because of the strongly positive response that the band had for the album, he felt that he needed to keep on releasing music. Soon after the band finished touring, Yamaguchi worked on a jingle for Tōshin High School, a song that would grow to become "Sayonara wa Emotion". Yamaguchi felt exhausted from the tour and was only able to develop the song's chorus. Immediately after the single's release, the band embarked on their Sakanaquarium 2014 Sakanatribe tour, a 22 date Japanese tour featuring performances at
Zepp live houses and two dates at the
Tokyo Dome City Hall, between January and March 2014. Footage from one of their performances at the Tokyo Dome City Hall was released as a video album on July 30. == Writing and inspiration ==