error: {{nihongo}}: Japanese or romaji text required (help) (Japanese: 不思議 "Mystery" or "Secret") is Akina Nakamori's ninth album, released on August 11, 1986, and is something of a concept album in that every track features distorted vocals of some kind (many unsuspecting members of the Japanese public at first thought this to be an unintentional mis-recording). Despite using unique vocal techniques foreign to her fanbase, the album proved to sell moderately well, debuting #1 with 464,000 copies and staying there for 3 weeks.
