Duan Surk II (9) Ochita Yuusha (Part 1)

is the ninth volume of Duan Surk II and the seventeenth volume overall of the Duan Surk light novel series, written by Mishio Fukazawa and Illustrated by Sunaho Tobe. It was released under the Dengeki Bunko Imprint in May 2007.

Synopsis
Duan who fought with Agnes and Orba and finally defeated the "faceless one" and rescued The Angel of Fire from the darkness. However, in the midst of the victory, the warning of The Angel of Fire was also empty, and Duan lost his memory of contact with the Dark Devil. Duan who joined Clay Judah and Rand who came to Opal and decided to leave together. On the way, without knowing Clay Juda or even Duan, who is the person in question, the dark demon witch erodes Duane's body and heart. And finally, a decisive thing happened-- !? A new chapter of turbulence has started!

(source: Bookwalker JP - Translated)