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.
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More Seasons
Characters & Voice Actors

Argento, Asia
Main
Asakura, Azumi
Japanese
Gremory, Rias
Main
Hikasa, Yoko
Japanese
Himejima, Akeno
Main
Itou, Shizuka
Japanese
Hyoudou, Issei
Main
Kaji, Yuki
Japanese
Kiba, Yuuto
Main
Nojima, Kenji
Japanese
Toujou, Koneko
Main
Taketatsu, Ayana
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