A collection of short stories centered around Highschool DXD, originally serialized in Dragon Magazine and republished in 2015 along with one unreleased story as the first volume of the DX Series.
Life.1: "Abduction ERO!"
The Occult Research Club tries to regain Issei's lost perverted nature after he got hit by a laser from a "UFO".Life.2: "Ultimate!! Onii-chan Mask"
Issei goes on a secret mission on Sirzechs' command to take pictures of Rias sleeping.Life.3: "Stop!! Yuuto-kun!"
Everyone on the Kuoh Academy, except Gasper and Issei, has their genders reversed by an invention made by Azazel.Life.4: "Records of Chichiryuutei's Pleasure Adventure"
The Gremory group tries to uncover the identities of a group posing as characters from the "Chichiryuutei Oppai Dragon" show.Life.5: "Love Song to the Reincarnated Angel"
Issei, Asia, and Xenovia follow Irina around to observe what an Angel does compared to the Devil's works.Life.6: "Let's go to Onsen"
The Occult Research Club and Grayfia goes to a secret hot spring to relax after the invasion in the Underworld.Life.DX: "Phoenix of the Battle School Building DX?"
A rematch of the Rating Game between Rias and Riser from Volume 2.Tropes in this volume include:
- And Now for Someone Completely Different: Kiba and Gasper take over narrating for Life.1 and Life.3 respectively.
- Get A Hold Of Yourself Man: Koneko, who punches the now-unperverted Issei in order to bring him back to normal. After repeated (failed) attempts, she ends up in tears, afraid that he would lose interest in her as he did with Rias and Akeno.
- Graceful Loser: Kuroka, who congratulates her sister for winning the Hellcat challenge.
- Hotter and Sexier: Kuroka's Hellcat costume
◊ is a lot more revealing compared to Koneko's◊. - Ms. Fanservice: Bikou invokes this by, while disguised as Switch Princess, providing fanservice to the people the Oppai Dragon team help.
- Noblewoman's Laugh: Bikou's interpretation of Switch Princess has her do this.
- Not What It Looks Like: Issei's harem walks in on him and Grayfia naked in the onsen, with Akeno thinking the latter has stolen the position of The Mistress from her.
- O.O.C. Is Serious Business: Rias notices something is odd with Issei addressing her in a more polite manner, but the moment he looks her in the eyes instead of her breasts is when she realizes something is wrong.
- Palette Swap: Vali disguises himself as Oppai Dragon by changing the color of his scale mail armor from white to red.
- Tranquil Fury: Akeno, when making it clear what would happen to Azazel if he doesn't bring Issei back to normal.
- Wham Line:Issei: "Don’t say improper things such as tits!"
- What If?: The premise of Life.DX is "What if Rias had faced Riser with her current completed peerage?"
- We Want Our Pervert Back: The basis of "Abduction ERO!" While admitting to want him to be less perverted, the Occult Research Club decided that they liked the old Issei better.
