"Butterfly" is a wedding song by Japanese musician Kaela Kimura, released as a digital single on June 1, 2009, roughly a month before her fifth album, Hocus Pocus.
The lyrics describe a newly wed bride as a butterfly, who is "more wonderful today than any other time before" who "flaps white wings, together towards happiness."
[1] The commercial began airing in mid April 2009, however it did not list the singer of the song initially.
[6] It features Kimura against a stylised outdoor background, in the style of a children's television show.
As she walks along, a real butterfly flies around her, and she passes blue cut-outs of different animals, such as horses and rabbits.
[2] This also caused "Butterfly" to reach the #1 spot on the RIAJ Digital Track Chart for two weeks.