POTU Genesis Prequel 2: A Demon's Uncertain Future

Nia Akagi, wife of the high lord of the Demon Hunting collective known as the Arashi, has a dream detailing a future where the Arashi were all killed by the powerful heir of the Kyofuu family, Sento Kyofuu. After awakening, she sends a spy from the Saito family out to watch the young heir's every move and to try to understand where and why everything will go wrong.