Kamitsumihara is a beautiful but mysterious place, a land where traces of ancient magic still exist and a drama two millennium old has yet to play through to its final chapter. For all this time, the Kamiazuma clan have acted as protectors, a fact that Toka Kamiazuma, whose body holds the stone sword Sekiken, has inherited as his duty. But when an unusual girl named Momoka Kawakabe enters his life unexpectedly, Toka begins to discover that they are...