Kanata Yanagino 
The Faraway Paladin (Manga) Volume 13 [EPUB ebook] 

To battle.

Will is locked in relentless single combat with the foul-dragon Valacirca and finding that he cannot succeed alone. Even the protection of his goddess is quickly shattered.

The tide takes a curious turn as a second deity enters the fray. As Will’s longtime adversary, Stagnate has no intention of granting him blessings; yet the god of undeath has great influence on this bloody battleground, where the foul-dragon decimated the dwarves of the Iron Mountains…

In this time of darkness, our heroes must stoke the fire of courage. One brilliant strike could herald a new dawn!