Alright so I haven't read manga so I can't compare it . But Coppelion for me had a beautiful idea. The main characters were girls which were saving people around the world. What was the problem? They weren't human. I really enjoyed watching how their characters were growing. This anime showed me beautiful power of friendship and also that it is possible to do anything if you want to. I'm not a big fan of this genre but Coppelion really made me cry.