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 traveling further to the south, the three get caught up in a graffiti competition. Who can "Tag" the most dangerous place? And can Mugen finally learn how to read? In a small village, Fuu saves a girl who happens to know the "Sunflower Samurai." With this more reliable clue they continue traveling to Nagasaki... without knowing a deadly trap awaits them.