Roberto Hoffman, a Navy SEAL officer, had a loving family and a peaceful life. However, his life takes a sudden turn when zombies appear. After losing his wife and son, Hoffman is only left with his niece, Ara....

Kujo Saburou is an "ordinary" high schooler, hyperactive and strangely interested in mysterious (alien) things. He quickly becomes friends with a new transfer student, Shima Ango, who happens to find him in a...