In the floating city of Novus Aether, ex-assassin Caim Astraea navigates the chaotic "Prison" district. His life changes when he encounters Eustia, a winged girl linked to the city's greatest disaster.

After the devastating "Gran Forte" split Novus Aether, the lower "Prison" district became a haven for crime, overseen by "The Noncorroding Gold Chains." A contagious winged disease and "Wing Hunters" further plague its desperate populace. Freelance ex-assassin Caim Astraea's life in the "Prison" takes a turn when he finds Eustia, a winged girl emitting the distinctive light of the Gran Forte, plunging him into the city's complex politics and darkest truths.

Aiyoku no Eustia manga: Ex-assassin Caim Astraea finds a mysterious winged girl in Novus Aether, revealing the city's dark secrets.

Aiyoku no Eustia, Caim Astraea, Eustia, Novus Aether, Gran Forte, Wing Hunters, Noncorroding Gold Chains, Action, Horror, Romance