Rikka is a ninja descendant. Her grandfather Hyoe is the last chief of their ninja clan and her father is a cyborg researcher. Both are killed when a weapons' company raids his lab to use his research. Rikka sets out to avenge their deaths.
A factory explosion plunges a small town into a timeless freeze, leaving teenage Masamune and his pals to grapple with a quickly collapsing reality.
