Summary:

Arcadia is plagued with evil, life-draining demons called Thanatos and a vast lack of Purifiers to exterminate them all. While attending school, Angelique attracts the eye of a man who intends to turn the tides to the people's favor. What lies within her is the key to Arcadia's survival. (from AnimeNewsNetwork)

Summary:

Taking place 6 months after the first season, Thanatos have taken over the Silent Sun. Angelique has been unconscious for the past 6 months and now her journey is about to begin again. (from AnimeNewsNetwork)