Raizou and Miharu finally have a shot at Musou Suburou, leader of the Great Chain. Miharu's revenge is in reach. The Great Chain's corruption can be stamped out.

But just as they get into position, Raizou gets an urgent message! His grandson's health has taken a turn for the worse! Now Raizou is torn between two children he's promised to protect, his partner and his grandson. Can Miharu get her revenge solo? Or is Raizou trading one child's safety for another's?