ᆦ>spoilers

The spoilers are that it tells you what the end game of Madoka, Sayaka, and Nagisa's plan is during Rebellion. The doujin keeps saying that it's a dream world and when it's over Kyouko and Sayaka will get separated. This is why Sayaka says "There's not much I can leave for you" and " This time Kyouko is going to be the one to lose something." That something being Sayaka.