It's autumn in Edo, and an innocent man, Hachigoro, is killed by a figure wearing a Hannya mask. Sabu wants to find the person, but after some practice at Yamaki Sensei's dojo where he is defeated by his daughter Oko, he realises that he may not have the necessary skills. Over the following nights the Hannya slasher strikes again. Sabu meets the figure in the night and recognises the Twin-Mind Blade Reverse style of Yamaki Sensei. They fight and Sabu is wounded, but the Hannya slasher runs off when Ichi appears...