Hazuki Family's maid Ine hands a letter to Ryo, who is restless from his Father's death. The letter was sent from a person named "Yuanda Zhu" to his father which contained characters he cannot read. Ryo begins investigating the letter to find out his Father's past. As he further investigates, he is targeted by "Mad Angels", the gang that runs Yokosuka Harbor's underground business.
Stupid to let your guard down 
for a lousy scrap of paper!
!من الغباء أن ترخي دفاعك من أجل قطعة ورق تافهة
É muito azar acabar distraído 
por um pedaço de papel!