High School DxD is a popular Japanese light novel series written by Ichiei Ishibumi and illustrated by Shiki Tōya. The 14th volume of the main series was released on December 20, 2013.

Without reproducing any copyrighted content, I can tell you that volume 14 continues the story of Issei Hyodo, a perverted high school student who is reincarnated as a Devil after being killed by his first love. In this volume, the plot likely involves more supernatural battles, character development, and further exploration of the complex world of Devils, Angels, and other mythical beings.

If you're looking for specific details about the plot or characters in volume 14, I'd recommend checking official summaries, reviews, or reading the volume itself if you have access to it. Keep in mind that later volumes may contain spoilers for earlier ones, so be cautious if you haven't read up to that point yet.