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.
And those sure as hell ain't 
no normal karate moves!
!وتلك ليست حركات كاراتيه عادية أيضا
So einen krassen Typen
hab ich ja noch nie gesehen!
J’ai jamais vu un gars aussi fort !
Mai visto un tipo così forte!
Nunca vi um cara lutar tão bem como ele!
Никогда таких сильных
бойцов не видел!