After a nuclear holocaust tears the world apart, mankind is forced to the harshness of not only the oppression of others who are much more powerful, but the dead earth which seems to be getting worse with every passing moment. But a savior has risen from the ashes, a man who will defeat those who would torment the weak and make the world a livable place once more. A man named Kenshiro…

12-year-old Oriko Seki, who lost her parents in a car accident, ended up living in her grandmother’s Onsen Ryokan “Haru no Ya.” With the ghost “Uribou” cohabitating with her and all the other odds, she ended up training to be a young female innkeeper. At first, she didn’t like the training, but gradually felt her admiration for her title and began to train seriously. Thus, the growth of the young warrior Oriko begins.