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!!

All Yuru wants is to live a normal life with his family, but the world has other plans for him. At the warehouse district, Right and Left continue to duel Ivan while Gonzo and his entourage make quick work of Hayato Shingo's goons. Back at the Kagemori manor, a traitor falls into a deadly trap set by Jin and Gabby. Elsewhere in the city, Asa follows a familiar distress signal, only to come face-to-face with her imposter again!