7 Demons of The Underworld

The world is a cruel and unforgiving place in this new world is a Hell made by an evil god for its own amusement. In this world he made a system but he needed some protagonist so he chose one based off of the bible one for each Sin. He gives them the dark gift each one is their main Sin that they had commented to be criminals. He had also offered to buy their memories for bonus and what memories they gave the more bonus power they were given. But each one of them has a dark past. Will they become the rulers of the demon realm or tear each other apart? Also, the god of good has made 7 heroes, one for each biggest country on the continent so will they be able to do their job given by the evil god ((conquer or destroy humanity)) or will the heroes die. Also a bonus from the evil god he gave them a system to help them grow but his younger brother also copied him and also gave the heroes a system.