"Strong Heart" is the song by Japanese singer Mai Kuraki for her tenth studio album, "Over the Rainbow" (2012). It was written by Kuraki and GIORGIO 13. This song was a released as a DVD single, under the name "Strong Heart: from Mai Kuraki Premium Live One for all, All for one".
In Japan, "Strong Heart" entered the Japan Oricon Weekly DVD chart at number 7, selling 19,859 physical copies in its first week. This song also charted on Billboard Japan Hot 100 at number 63 without physical sales.
In Taiwan, this song entered the G-Music DVD chart at number 3.
In 2012, she performed this song at Nippon Budokan during her live tour "Mai Kuraki Premium Live One for all, All for one". This movie is included in the DVD.
This song was used as ending theme of the Japanese drama, "".