DxD Volume 1: Life of the Perverted Beast

(AU) To the students of Kuoh Academy, he's a disgusting nuisance obsessed with breasts. To the street gangs and delinquents, he's a well-known, but average fighter...obsessed with breasts. However, is there more to Issei other than his brawling tendencies and his love for big boobs? Pervert Issei, IsseiXHarem