E8. Lament, Mumei! Over Your Father's Dead Body!

The mysterious figure continues to taunt Mumei, challenging him to a duel to prove the ultimate power of the Shokatsu Technique. What does this man know about Shokatsu Technique and how might it help Mumei? The lives of Koui and Mumei's father hangs in the balance as Mumei makes his way to the top of the tower for a showdown with destiny. But why is there a sauna?!