Overlord Novel Volume 15 was written by Kugane Maruyama with illustrations by So-bin.

The Nation of Darkness continues to expand its territory, and in preparation for a potential looming war, the Slane Theocracy plans to overthrow the elven king. Unaware of this plot, Ainz heads to country of elves for vacation with Aura and Mare in hopes of helping them make new friends only to get caught in the political crossfire!