Light Novel Volume 10

Lion Heart of the School Festival is the tenth novel of the High School DxD series. The novel covers part three of the Heroic Oppai Dragon arc.

Chapters

 * Life.0
 * Life.1: "Preparations for the School Festival!"
 * Life.2: "A Maiden's Heart is Complicated"
 * Life.3: "The Young Devils Showdown Begins!"
 * King.
 * Life.4: "As a Servant of Rias Gremory"
 * Pawn.
 * Life. "MAX VS Power. Red Dragon Emperor vs Lion King"
 * Life. "MAXIMUM VS Power. Crimson and Red"
 * Emperor.
 * LION HEART.
 * Indra.
 * New Life.
 * Extra Life. "The Dream that Does Not Finish, and The Dream that Finishes"
 * Afterwords

Returning Characters

 * Issei Hyoudou
 * Rias Gremory
 * Asia Argento
 * Akeno Himejima
 * Yuuto Kiba
 * Koneko Toujou
 * Xenovia
 * Irina Shidou
 * Rossweisse
 * Sairaorg Bael
 * Kuisha Abaddon
 * Ravel Phenex
 * Riser Phenex
 * Sirzechs Lucifer
 * Azazel
 * Ddraig
 * Genshirou Saji
 * Odin

New Characters

 * Misla Bael
 * Misteeta Sabnock
 * Beruka Furcas
 * Gandoma Balam
 * Ladora Buné
 * Regulus
 * Coriana Andrealphus
 * Liban Crocell
 * Lady Phenex
 * Hades
 * Indra
 * Zeus