Episode 12 (Season 2, NEW)

"Two Heavenly Dragon, Collide!" is the final episode of the second season of the High School DxD anime. It aired September 22, 2013.

Stats
Original airdate: September 22, 2013

Writer: Tetsuya Yanagisawa

Featured Characters
(Numbers indicate order of appearance. New characters listed in bold.)

Differences between Light Novel and Anime

 * 1) In the Light Novels, Vali betrayed Azazel before he defeats Katerea, while in the anime, he betrayed Azazel after Azazel killed Katerea.
 * 2) In the Light Novels, Vali revealed his real identity during the battle between Azazel and Katerea, while in the anime, he revealed it after Katerea was killed.
 * 3) In the Light Novels, Ophis and Khaos Brigade were mentioned in the meeting, while in the Anime, Azazel asked Vali about it when he betrayed him.
 * 4) In the Light Novels, Azazel had a talk with his subordinates after the peace treaty between the Three Faction is confirmed, while in the Anime, he merely left with his subordinates after they finish helping in the reconstruction of the Kuoh Academy.