Beautiful young Kinu Yamabe is drawn to low-born Onimaru, who’s vital and charismatic, but viewed by his father as a demon, and by most of the remaining family as a stain to the family name. But after her first period, Kinu suffers the fate of any women born near the Sacred Mountain: she must leave the Mountain and serve as priestess But she has a plan to stay near her old home – which involves marrying into a rival branch of her family.