Book 1
#1
High School DxD, Vol. 1Diablos of the Old School Building (High School DxD (light novel), 1)
Ichiei Ishibumi - 2014-05-27 (first published in 2010)
This epic tale follows the story of Issei Hyoudou, a high schooler who experiences a fatal encounter with his first girlfriend and is saved by Rias Gremory, the prettiest girl in school. But she reveals a shocking truth - Issei has been reborn as a devil and must work for her. This hilarious and thrilling adventure explores Issei's life as a devil's minion.