Stylistically, W Face serves as a concept album and delve into two personal sides of the singer: Inside deals with emotional themes, while Outside portrays an aggressive and uptempo approach. Commercially, both records experienced success in Japan. Outside became Kumi’s ninth studio album, and twelfth overall, to top the Oricon Albums Chart, while Inside opened one position behind.

Track name:          Insane / Bassline
Work:                Produced and co-written by Dsign Music
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