The Vespertines were one of the most respected extra devil clans, confining a grimoire that has been feared since the beginning of devil civilization. Argus Vespertine, is the last member of his family after the everyone else was massacred, destroying his peaceful former life. 
Now he looks for the truth, the truth of what who, what, and why his family were killed that night; but in order to get answers, one must have power. Follow Argus’ quest to find the truth about his family, and watch him work his way up the ranks of the world.

A more realistic take on the DXD world

Chapter 1 - Ashes