Nanoka and Mao are obliged to work with their enemy Sasuga to save a young woman from being sacrificed to a mysterious water god. Then, the cat demon Byoki attacks one of Mao's allies! Plus, Natsuno brings Nanoka a new training challenge, an ancient, mummified man with a major grudge...
When Nanoka is transported back in time to a supernatural early 20th century, she gets recruited by aloof exorcist Mao. What thread of fate connects them? Together, they seek answers...and kick some demon butt along the way!