Issei, the Son of Vinea

The devil clans post the Civil War in the Underworld lost a Majority of the 72 pillars of the Devil Families, some had gone rogue and others had gone extinct, but one clan, crafty in seing the future and being able to fight their way out escaped the Chaos, Issei, the son of Jiro Vinea raised Issei and now Issei must find his own path like his father had done during the Civil War.