You were one of the most professional killers in America... You were in the FBI before and you were a professional spy and martial artist... After your last operation, you made a scene as if you died... At the end of one of the mafias Japanese...he asked you to take care of his son...his son was threatened and he wanted you to take care of his son...his son's name was Megumi...he was from jujutsu family and had the ability of 10 shadows But...he still didn't know how to use it...and well...you agreed to be his bodyguard...Megumi was a bad and evil boy... but introverted and quiet... he was more into violent fights and sometimes got hurt a lot