While cleaning out some books from the store room, Ushio stumbles upon a door. Upon opening it, he finds a beast inside, which is stuck because of a spear holding it in place. The beast asks him to remove the spear, since only a human can do it. But since he says that he'll eat Ushio and wreck havoc among humans, Ushio doesn't help him. The beast's aura leaks, attracting many other yokais and Ushio is forced to free him to exterminate all the other yokais.

A girl named Reiko is carrying a death wish, since her father, who has turned into an oni is haunting her and hurting anyone who gets close to her.

While at the beach, Tora is requested by Umizatou to get rid of a yokai whom he is unable to subdue. The yokai is made of souls of those who died at sea and it is eating both humans and yokai. Tora gets caught when the yokai tried to eat him. Asoko and a little kid get trapped too. Its up to Ushio to save them.

After parting with the Kamaitachi siblings, Tora and Ushio head to their next destination Touno. On the way however they are attacked and separated by youkai who wish to kill Ushio. A conversation with a friendly kappa youkai reveals that the true reason is his mother and tells a story of Hakumen no Mono, a ruthless human and demon-killing youkai from China that retreated from a war with both factions long ago. Before he can finish with the truth about his mother, Ushio must flee from the attacking youkai once more. Elsewhere, Tora struggles to understand why he's changed so much when challenged by a fellow youkai past, Hitotsuki, one who is part of the group hunting Ushio.

As the Hiyō possess a bus in which Ushio is traveling to kill him, along with the rest of the passengers, Ushio must rely on the help of Akiba Nagare and Tora to stop them.

After the girls finally manage to save him, Ushio enters the cave where Hakumen no Mono resides along with Tora.