Seraphim: 2-Oku 6661-Man 3336 no Tsubasa

Seraphim: 2-Oku 6661-Man 3336 no Tsubasa, otherwise known as Seraphim: 266,613,336 Wings, is set after the world has been ravaged by "tenshi-byō" (or angel disease), an affliction that eventually leads to death for all the victims. To solve the mystery of this disease, three wise men and a girl named Sera embark on a journey to the heart of Central Asia. Many enemies and conspiracies await them along the way to the truth.