 If you liked
Cluster Edge
|
 ...then you might like
07-Ghost
|
If you like 7-Ghosts, Allison & Lillia, Chrono Crusade, Fullmetal Alchemist, Kino's Journey, Kuroshitsuji, Pumpkin Scissors,Trinity Blood, or Valkyria Chronicles, you may well enjoy Cluster Edge as it is set in similar kind of alternate world and deals with questions about war, religion, spirituality, and what constitutes humanity