Harukanaru Toki no Naka de

On the first day of a new school term, high school student Akane Motomiya is pulled into a mysterious old well along with her classmate Tenma Morimura and their underclass friend Shimon Nagareyama. They wake in Kyō — a world resembling Kyoto during the Heian Period. A young man of the Star Clan named Fujihime tells Akane she is the Ryūjin no Miko, destined to save Kyō from the ambitions of the Oni Clan. Eight men called the Hachiyō are bound to support her in this task — including Tenma and Shimon. Bewildered by everything at first, Akane gradually learns to face her destiny and understand what Kyō is asking of her.