[Tokyo Tomodachi Kouen (Sekiguchi Hiroki)] hatsujou ritchan (THE IDOLM@STER)
[Studio N.BALL (Haritama Hiroki)] Kaze Mama! "Yotsubato!" Nijisousaku Soushuuhen Mamakan (Yotsubato!) [Digital]
The Ultimate Art Collection Of "Natural2 -DUO-"
Natural 2 Duo Visual Fan Book