The thing that will draw you in is the mystery of the anime at first and very quickly it will be for the unusual sight of zombies in a anime. You have the regular zombies as they should be. Slow but when they sense human flesh they go crazy. Just imagine a zombie outbreak in a city like Tokyo. And even more at a school as it is in this anime. But the thing that will make you watch is the survival and the thought of hopelessness and the ‘What if this happened to me?!’ as you watch it.