Kingdom Of Z manga volume 1 features story by Saizou Harawata and art by Lon Watanuki.

When the zombie apocalypse came to Japan, Satou Masaru thought he was a goner for sure…until two super hot girls came to his rescue! But Satou’s relief is short-lived once he realizes just how insane his saviors are: Karin is a happy-go-lucky psycho, while Miki is a megalomaniac with plans to create an undead army and rule the world! Can Satou survive being their underling, or will he take his chances with the zombies?!