Nazo (謎, lit. "Mystery") is the first music album of Japanese singer Miho Komatsu. It was released on 3 December 1997. It includes the singles Nazo and Kagayakeru Hoshi. The album reached number 5 in its first week, with 89,810 copies sold. The album charted for 40 weeks and it sold 400,000 copies altogether. Several of her songs were originally written for other bands: "Sabitsuita Machine Gun De Ima Wo Uchinukou" for Wands, "Aoi Sora Ni Deaeta" for Arisa Tsujio as the Chūka Ichiban! anime theme song, "Kono Machi De Kimi to Kurishitai" for Field of View, and "Kimi ga Inai Natsu" for Deen.