It's been revealed that SMAP's first single of 2015 will be used as the theme song for Fuji TV's upcoming drama 'Zeni no Sensou' starring member Kusanagi Tsuyoshi.�

Titled "Kareinaru Gyakushu", the song was written and composed by singer-songwriter Sheena Ringo. She has previously provided "Manatsu no Datsugokusha", which was included in SMAP's 2012 album "GIFT OF SMAP", but this will be her first time providing a single for the group.�

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"Kareinaru Gyakushu" is described as a sexy medium-tempo tune. Kusanagi commented, "It's a song that fully displays the coolness of an adult. I think it's perfect for our drama." The song will be released together with�"Humor Shichauyo" as a double A-side single on February 18.

Fuji TV will air 'Zeni no Sensou' every Tuesday nights at 10:00 pm (first episode from 9:00 pm) starting January 6.�

Source: Nikkan Sports