Jiro, full name is Jiro Kaiser Kachikato, is a cold-blooded war freak that kneels for no one but himself. He's not really the type of guy to enjoy chit-chats, but he doesn't mind when it's his squad members. He's the marksman of the Darkbirth squad, and he's aggressive in trainings. The squad consists of 5 members, each of them have roles, and their priority is to protect the townspeople along with the empire of Kratodecio from demons from the underworld.