Duan Surk II (15) Eien no Yakusoku, Sorezore no Tabidachi (Part 2)

is the fifteenth volume of Duan Surk II and the twenty-third 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 March 2011.

Synopsis
Surrounded by a plethora of monsters, the desert city of Evelyn was in despair and horror, and was about to fall into the hands of the dark demons. Can Duan, who has successfully taken the basilisk out of the dungeon and teleported to Evelyn, take a mortal rebirth to save the day? And what is the fate of Lulufet, who was robbed by the dark demon and became the general general of the monster? The story of Mishio Fukazawa's feature-length fantasy series "Legendary Hero" Duan Surk, completed after 15 years!

(source: Bookwalker JP - Translated)