Manga Volume 4

The upcoming fourth volume of the High School DxD manga will be released by Fujimi Shobo on January 9, 2013 under their Dragon Comics Age imprint. It will cover the fourth (and final) part of the Red Dragon Emperor's Awakening arc.

Chapters

 * 17. "The Showdown Begins!"
 * 18. "I'll Enchant You With my Finishing Technique!"
 * 19. "Combine the Power of the Two!"
 * 20. "I Can Still...Fight!"
 * 21. "I'm Taking Prez Back!"
 * 22. "I'll Blow Away the Immortal Bird!"
 * 22.5. ""