Shiro and Ichiro´s investigation has led them through all kinds of twists and turns: close calls with members of the yakuza, dangerous trysts with political elite-all while maintaining their ruse as passionate lovers. And yet, with every step they take toward the truth, a tendril of a deeper mystery pulls it just out of reach, leaving more unanswered questions. Their encounter with a skilled assassin at an amusement park seems to be proof of a mastermind at work, if only they could identify who…