Nogizaka46 member Ikuta Erika (生田絵梨花)'s first solo gravure "Tencho" (転調) first week sold approximately 38,000 copies, and ranks no. 1 at both ORICON general book and gravure weekly chart.
Original sources:
ORICON Style
http://www.oricon.co.jp/news/2065961/full/
Yahoo News
http://headlines.yahoo.co.jp/hl?a=20160128-00109974-lisn-musi
Order Tencho at CDJapan:
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