This is a Devil May Cry/solo leveling/ DXD Fanfic Issei Hyoudou is betrayed by everyone in the supernatural being the leaders, his girls, his partner. Everyone to the point where he has nothing left, but one girl. Saved him and now he tries to push himself to get stronger because without strength, you can't protect anything. So he vow to work hard and protect his New Family. Images are not mine.
6 parts