So this is the post the composer called Nana made about the opening of W FACE Tour:
https://www.instagram.com/p/BcWQkxxl...-by=nana_music
She says it was a dream of hers to make something for a big stage and she thanks Kuu for making that dream come true.
She was also able to see it live in Tokyo.
Plus she mentions at the beginning, that it was the 2nd time for her to work for Kuu.
First one was called "So Sexy" - I assume that this was the working title for "So Fever", cause the credits for it are as following:
Words: Kumi Koda
Music: NaNa★MUSIC / TRAK STA
Arrangement:EQ