Sakakibara Kenkichi
... that Sakakibara Kenkichi and Yamaoka Tesshū once engaged in a forty-minute sword duel without either striking a single blow?
... that <b id="mwArs"><a href="./Sakakibara_Kenkichi" id="mwArw" rel="mw:WikiLink" title="Sakakibara Kenkichi">Sakakibara Kenkichi</a></b> and <a href="./Yamaoka_Tesshū" id="mwAr0" rel="mw:WikiLink" title="Yamaoka Tesshū">Yamaoka Tesshū</a> once engaged in a forty-minute sword duel without either striking a single blow?