Manga Volume 4

The fourth volume of the High School DxD manga was released by Fujimi Shobo on January 9, 2013 under their Dragon Comics Age imprint. It covers 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'll Taking Prez Back!"
 * 22. "I'll Blow Away the Immortal Bird!"
 * 22.5. "I Start a New Life"

Characters

 * Issei Hyoudou
 * Ddraig
 * Rias Gremory
 * Asia Argento
 * Koneko Toujou
 * Akeno Himejima
 * Yuuto Kiba
 * Sirzechs Lucifer
 * Grayfia Lucifuge
 * Lord Gremory
 * Venelana Gremory
 * Lord Phenex
 * Riser Phenex
 * Yubelluna
 * Ravel Phenex
 * Mihae
 * Karlamine
 * Siris
 * Isabela
 * Xuelan
 * Ile and Nel
 * Ni and Li
 * Shuriya
 * Marion
 * Burent
 * Mira