The "Badger Hole" is a tunnel of death that leads into the bowels of Edo Castle, where Kagimura and Burando have been killing scores of prisoners in their attempts to transfer and duplicate the "kessen-chu immortality effect" that runs through Manji's veins. Mutilated body after body has been dragged out of the "Badger Hole" by prison guards and beggars, as most of the immortality experiments have been failures. Rin and Döa begin a reckless descent into this darkness, hoping to find their captive friends, Manji and Isaku. The girls are reckless, indeed, but they're not going without a few new tricks up their sleeves!
