Issei SOS is the thirteenth novel of the High School DxD series. It is the first novel of the Legend of Oppai Dragon and his Lively Companions arc, and the second short story collection in the series, after Volume 8.
There are two editions of the novel published: a limited edition (released on September 6, 2012, of which 1000 copies were produced) which features an OVA 13th episode of the High School DxD anime on Blu-ray disc, and a regular edition (released on September 20, 2012) which lacks the episode. The episode was written by Ichiei Ishibumi, the author of the light novels, himself.
A Tokusatsu Devil
A short story depicting Issei, Koneko, Xenovia, and Gasper starring in Serafall's movie.
(Takes place after "A Tokusatsu Devil")
A short story where Issei pretended to be Abe's boyfriend to help her break off her engagement set up by her father.
The Disturbance of a Devil
(Takes place after Volume 7)
The Unresurrected Phoenix
(Takes place after Volume 8)
Ravel Phenex comes to see Rias and Issei to see if they can help her brother Riser, who has become a recluse following his loss to Issei in Volume 2. The pair agrees and they go to visit Riser at his family home in the Underworld. Who they discover has developed an immense fear of Dragons, because of Issei. They drag him out of his room and outside where Tannin arrives shortly thereafter where he proceeds to take Riser, Ravel, and Issei to his territory.
In Tannin's territory, they encounter Riser's peerage and a large number of Dragons who serve Tannin. They force Riser to train, and Issei is told to train as well. Issei finds the training somewhat difficult, being unfamiliar with running in deep snow, but Riser is completely exhausted early into the first day.
After some time passes, Riser sneaks out to see Rias and Akeno while they are relaxing in the hot springs, hoping to get a peek at their breasts. Issei goes into Balance Breaker and chases after him. After a fierce battle, Riser is knocked unconscious, and Issei accidentally sees Ravel nude, which causes her to attack him with fire.
Riser is revealed to have recovered, but still have the hots for Rias.
Armageddon at Sports Day
(Takes place after "The Unresurrected Phoenix")
The Worries of the Next-Next Heir
(Takes place after Volume 12)
- Life.1: "A Tokusatsu Devil"
- Life.2: "Issei SOS"
- Life.3: "The Disturbance of a Devil"
- Life.4: "The Unresurrected Phoenix"
- Life.5: "Armageddon at Sports Day!"
- Extra Life: "The Worries of the Next-Next Heir"
|Main Characters||Returning Characters||New Characters|
- High School DxD Light Novel (Vol.13, BD Edition) at Kadokawa Shoten (Japanese)
- High School DxD Light Novel (Vol.13, reg. Edition) at Kadokawa Shoten (Japanese)
- Highschool DxD Light Novel Volume 12 Afterword
|The Red Dragon Emperor's Awakening|
|1 • 2|
|Birth of the Breast Dragon Emperor|
|3 • 4 • 5 • 6|
|The Heroic Oppai Dragon|
|7 • 8 • 9 • 10 • 11 • 12 • 13|
|The Legend of Oppai Dragon and his Lively Companions|
|14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22|
|Red Dragon Emperor of the Blazing Truth × White Dragon Emperor of the Morning Star: The True Dragon(s) of the Kuoh Academy|
|22 • 23 • 24 • 25 • True 1 • True 2 • True 3 • True 4|
|1 • 2 • 3 • 4 • 5 • 6|
|EX • Zero|