One Punch Man: Legacy Of The Beast

The Beasts Have Roamed the world for centuries, Each passing their unique bloodline down... The Professor got his hands on this unique blood and decided to experiment it by using it on a Regular Human... Life wasn't the same and would never be the same, He might think He's being a Hero, but in the end, He's nothing more than a senseless beast with the Ultimate Power. This is the Legacy... This is his purpose as the Last Beast!