A souvenir came from Japan yesterday: an odd kind of a promo book for all things IM@S, althogh most of the manga content is dedicated to "Puchi Maa": a manga about Potemayo-type blob versions of idols coexisting with normal idols. The book includes sample strips and kickass manga-style re-imaginings of idols (the picture is of Yukiho).
Aside from managa, there's a lot of other material, such as interview with seyuus, transcripts of radio shows, and lots of ads for things like DLC and Im@s Mobile.