Kantarou and the gang are at a mansion that has been overrun by monsters and they cannot find the source.  Youko, thinking that the lady of the house has something for Haruka, keeps getting the two together.  Youko discovers a room of flowers in an building in the yard.  When Kantarou investigates he finds a monster snake there.  While he battles it, the lady of the house captures and tortures Haruka.  Kantarou arrives with the monster who he befriended and they prepare to battle the woman, who is actually a demon that took on the appearance of the owner of the house.  She tells them her real name and shows her real appearance before she and her henchman leave.  They group are a little puzzled by all this.  Elsewhere the henchman asks the lady whether or not she should have given so much away and she replies that it is much more fun to hunt a challenging opponent that not.