Third in the ranking of the "Assassin Name" families of the underground assassin community, the "Zerozaki Ichizoku" is infamous for their indomitable family unity. Each of its members exhibit combat prowess...

Iori is a high-school girl who doesn't know what she wants to do with her future, and tends to run away from things. One day, she is attacked by strange dead-eyed people on her way to school, only to be saved...