Nana Komatsu has graced the cover of Rudi Magazine several times. In the Vol.2 issue (October 2015) she was promoting clothes sold by Kastane stores in Japan. The magazine, now out of print, may be found on eBay or Yahoo Auctions Japan, second hand copies surface from time to time on Amazon Japan.
Details: Mook: 125 pages – ISBN-10: 4575455660 – ISBN-13: 978-4575455663
Sources: Kastane – Harunana – Whalepanda + direct scans from the magazine