Love, Thy Name Be Sorrow, The Mad Fox, Koiya koi nasuna koi, 恋や恋なすな恋 (1962) dir. Tomu Uchida

In the medieval Japan that only appears in fantasy, a court astrologer foretells a great disturbance that could cause the end of the kingdom of Emperor Suzaku. The astrologers wife wants one of his two proteges, Doman, to take over for her husband, while Yasunori the more idealistic of his disciples just wants the love of the seer adopted daughter Sakaki. This leads to Yasunori the astrologers wife plotting his murder, which ends up with the old man and Sakaki dead. Yasunori is blamed when he kills the woman in a rage, takes the old mans Chinese book of secrets and runs on a journey with no destination into the woods. Soon, hes gone mad, but will soon meet the daughters long lost sister Kuzunoha, fall in love and then learn that shes a fox in human form.