Seraphim: 2-oku 6661-man 3336 no Tsubasa
Seraphim: 266613336 Wings
セラフィム 2億6661万3336の翼
The story is set after the world has been ravaged by "tenshi-byō" (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.