A series of 3-5 minute specials that were bundled with the HighSchool DxD DVD and Blu-rays. They are a stand alone set of episodes that are not a part of any story line in particular.
Special 1: Going Sunbathing! - The Occult Research Club goes on a beach outing.
Special 2: Issei's Private Training! - Issei is being given lessons in magic by Akeno.
Special 3: A Little Bold, Koneko-Chan... Nyan! - Koneko accidentally has her personality reversed magically, making her incredibly sexually active and reversing her sexual preference.
Special 4: The Untold Story of The Dress Break's Birth! - A few flashbacks of how Issei first found out and eventually perfected his special move, Dress Break.
Special 5: Making Udon! - As part of a penalty for losing a bet, Sona and Tsubaki make udon for the Occult Research Club but the udon comes to life in a peculiar way...
Special 6: Asia Transforms! - Asia wants to prove she is just as bad as any demon by using ideas found in Issei's magazines, going as far as dressing up like a harlot and seducing him.
(Source: Wikipedia)+ More
More Seasons
Characters & Voice Actors

Hyoudou, Issei
Main
Kiba, Yuuto
Main
Katase
Supporting
Matsuda
Supporting
Motohama
Supporting
Murayama
SupportingRecommended for you
High School Fleet
TV
24m
My-Otome
TV
24m
Naruto: Shippuden the Movie
Movie
94m
Ben-To
TV
24m
Sailor Moon SuperS Plus: Ami's First Love
Special
15m
Fullmetal Alchemist: Reflections
Special
55m
Earl and Fairy
TV
25m
Chaika -The Coffin Princess-
TV
24m
Just Because!
TV
23m
Kuroko's Basketball Special
Special
9m
Kamichama Karin
TV
24m
MÄR: Märchen Awakens Romance
TV
24m
Midori Days
TV
24m