Ishibumi Ichiei

A new student steps up to the gates of Kuoh Academy junior division. Zekka, a descendant of Miyamoto Musashi, wields the sword-shaped Sacred Gear "Tensei." Her goal? To make friends at Komaou Academy!?

Caught with a severe fever, Tobio Ikuse, a second-year high school student, was forced to miss his school trip on a luxury liner with his schoolmates. Four days later, Tobio hears the news about the disappearance of the teachers and second-year students from his school, and it devastates him. A few months after the incident, Tobio, having slowly recovered from the sudden loss of his friends, accidentally encounters one of them again. Chasing after his missing friend Sasaki, Tobio finally manages to catch upto him, but is shocked to see Sasaki alongside a Lizard Monster who attacks him together with the monster. Cornered by the monster, Tobio is rescued by another survivor of the missing luxury liner, Natsume Minagawa, who then hands him an egg before parting ways. Later that night, Tobio finds himself under attack, again, this time by two people with monsters. Amidst all the ensuing chaos, out of Tobio's shadow, came out a Puppy that rescues him. After fending off the two monsters, Natsume once again approaches Tobio before finally deciding to take him to their hideout.

Hyoudou Issei is an ordinary yet lecherous highschool student who is killed by his girlfriend, Amano Yuuma, during their first date. Yuma is revealed to be a fallen angel named Reinare who was sent on a mission to eliminate divine weapons. Issei is later reincarnated as a devil by his senpai Rias Gremory; who in return will serve under Rias in fighting against the fallen angels. Adaptation of the Light Novel series written by Ishibumi Ichiei with illustrations by Miyama-Zero.

Manga adaptation of the short stories found in the eighth volume of the light novel.

Spin-off of High-School DxD that deals with the lives of two cute girls in the group, this takes place after Chapter 10 of the main manga series.

Hyoudou Issei is an ordinary yet lecherous high school student who is killed by his girlfriend, Amano Yuuma, during their first date. Yuma is revealed to be a fallen angel named Reinare who was sent on a mission to eliminate divine weapons. Issei is later reincarnated as a devil by his senpai Rias Gremory who in return will serve under Rias in fighting against the fallen angels.