DxD: The Heir of Asura

Sevastian was living his life as a criminal lawyer, representing bad guys and winning big—money, power, women. Unfortunately, dealing with bad people leads to bad results, and he ends up learning that the hard way—by dying. But what he thought was the end, or worse, a one-way ticket to hell, turned into a one-way ticket to the underworld. Now, stuck as Faiser, the heir of two Fallen Pillars, Valefar and Barbatos, he must navigate a world of gods, angels, devils, and dragons. Wielding the bloodline powers of Time and Space from the pillars, along with a system that calls itself the ‘Asura System,’ he has to survive and build a better life than his previous one. Not by being a good guy, but by becoming wealthier, stronger, and even more popular with women. — Description from novelcodex.org