"e-mook" is something of a complicated brand name/portmanteau. "Mook" is a term used for Japanese publications that are somewhere between a magazine and a book. An "e-mook" is then publisher Takarajimasha's term for a mook enhanced with a bonus item, like a t-shirt or towel. Their latest is a Madoka Magica - "Sayaka and Kyoko LOVE!" set, with 48-page mook and excluse tote bag.
The book features the story of Syaka and Kyoko's relationship analysis of the characters personalities, interviews with voices actresses Eri Kitamura and Ai Nonaka, a letter to the characters from original character designer Aoki Ume, a short story from comfort food manga writer Mizusawa Etsuko (Hana no Zubora-Meshi) and character designer/animation director Taniguchi Junichiro, stickers and posters.
The bag goes on sale this weekend for 1680yen
The previous Madoka/Homura e-Mook featured a QB Camo tote