Featured: Has all the assassins including Haru or Haru by herself.
Tokaku and Haru: (Simple enough) Any fanart of Haru and Tokaku.
12 assassins: Any of the assassins not including Haru.
Ships: Any Akuma no riddle ship besides Tokaku and Haru.
Cosplay: Anyone cosplaying characters from Akuma no riddle.
Other: Art, Reactions or anything that is Not Canon from the show.