2" is the fourth Japanese ending theme to the 2014 Yo-kai Watch TV-series, succeeding "Don-Don-Dooby-Zoo-Bah!

1" being "a hit", multiple Dream5 members stated that they felt pressured to make "Yo-kai Exercise No.

According to Dream5 member Kotori Shigemoto, Ikeda based the choreography on the song's lyrics.

[3] The song later debuted in the Yo-kai Watch TV-series as the new ending theme in episode 68, aired May 8, 2015.

On the same day, a short version of the song was uploaded to YouTube by Avex Trax.