Orc Eroica, Vol. 2 (light novel): Conjecture Chronicles — Rifujin Na Magonote

DESPERATE TIMES FOR ELVEN BRIDES...
Having struck out with the knight Judith in human lands, Bash's quest to lose his virginity leads him to the forest of elves. There, he learns that the ravages of war have claimed the lives of many elven men…making interracial marriage more popular than ever! While looking for an opportunity to charm the pants off a local beauty, fortune practically falls into Bash's lap when he hears about a zombie infestation. Perfect! All he has to do is rack up an impressive body count, use the reward money to buy a special necklace, and propose to the apple of his eye. There's just one problem -- the zombies are undead orcs!