Check out commemoration wallies from Prince of Stride and other wallies after the jump.
December wallie from From 5 to 9 via Heart of Manga
November wallie from Short Cake Cake via Heart of Manga It's an unconfirmed reverse harem. I've read two chapters so far and the third guy in a yukata has not made an appearance yet.
UPDATE 1 added wallpaper 5 & 6 for POSA 2/11/15