Then a burgeoning model, Komatsu Nana was 15 years old when she made the cover of Kimono Girl (キモノガール62483-82) a Kadokawa mook issued in April 2011. Promoted by 3BJunior, the junior/underage section of Stardust Promotion, she started her modelling career in 2008 with Nico-Petit ニコプチ.
Details: Mook published by Kadokawa Group Publishing on April 22, 2011 – ISBN-10: 4048940813 – ISBN-13: 978-4048940818 – 79 pages – Photographs and design by Ayumi Shikata. This mook is out of print but used copies may be found on Yahoo Auctions or Amazon Japan.
Sources: Nippon Graph – Direct scans from the mook