This is the biggest injustice i've seen on MAL. Somehow Genocyber has a higher score. I'll use it as a parameter: If the gore in Genocyber can give you the ick and put you away, the gore in Apocalypse Zero is tasteful, funny, and peppered in correct dosage. This OVA is the perfect blend of funny, interesting and insightful, with a brisk and breezy pace covering the first 3 volumes of the manga. I'm hooked, and I will be reading the manga to know more. The design is lovely, both in human characters and monsters. The background setting, the story, will make you see the connectionsbetween then and now, historically. It's a very thoughtful piece done up with the fun colors of violence. For an OVA made in an era where the norm was to take the gore you pornographically display super seriously, making the author some sort of edgy misfit bent on violence, this is delightfully cartoonish without losing it's believability.