Hiromu Arakawa, award-winning manga creator of the best-selling smash hit Fullmetal Alchemist, draws readers into an intricate new web of magic, intrigue, and life-or-death stakes!

In a world where certain humans command mighty supernatural duos called Daemons, it is the birthright of "the children who sunder day and night"--twins Yuru and Asa--to rule over these powerful entities.

Separated from a young age and unaware of the truth of their birth, brother and sister must fight to make their way back to each other, claim their birthright, and save the world...

Ancient Daemons awaken to fight a new battle in an age-old war!!

Yuru finally joins the fray against Ivan, who proves to be a menace even when injured! Using his sharp tongue and even sharper reflexes, Ivan manages to get away--but not before taking a few more lives. As the long night draws to a close, Yuru engages in heart-to-heart talks with both the fake Asa and the real Asa. Can they reconcile Higashi Village's sins from the past with their own hopes for the future?