Reaper

On his 21st birthday, Sam discovers his parents sold his soul to the devil before birth and he must now be a bounty hunter for the devil until he dies.

For the first 20 years of his life, Sam wondered why his parents always let him get by with the least possible effort.

Everything in his slacker world changed the day Sam turned 21 and discovered the truth: his parents sold his soul to the devil before he was born. Satan himself drops by to personally explain that Sam must now serve as his bounty hunter.