Overlord: The demon’s duke daughter fell for me

For eighteen years Damien Holmes had a difficult life, his parents were greedy good for nothing who wanted to get rich without working hard. Despite being young poor Damien had to take on multiple jobs such that he would be able to live the realistic life that God has given him but on his eighteenth birthday, he finds out that his parents have made a deal with a demon. They have sold him to a demon who wanted to take him as his son in law for his daughter fell in love with him. He of course did not want to live in the underworld where human heads were served on a silver platter but the deal was done and he had no choice but to accept his fate. Now under the terms given by his so called father in law, he has to befriend seven demons representing each sin and become the overlord of the underworld to marry his daughter. If he fails then his father, Duke Vivi would disintegrate his soul by blowing it into smithereens never to reincarnate. Join Damien on his bizarre journey of becoming the demon overlord.