After all that's happened, fate brings Jin, Mugen and Fuu back together. They meet a mysterious man, Okuru, who is wanted for committing arson against his own village. And yet, Mugen identifies with him. While travelling further to the South, the three get caught up in a graffiti competition. Who can 'tag' the most dangerous place? Can Mugen finally learn how to read? In a small village, Fuu saves a girl who happens to know that 'sunflower samurai'. With this more reliable clue, they continue travelling to Nagasaki without knowing that a deadly trap awaits them.....