Bride of Darkness 2

During his spying on the beautiful young lady through a hole in the ceiling, a young servant, Sanshiro, who has fallen in love with his master's daughter, Momoyo, is tortured by lusty fantasies. The day her betrothed arrives from overseas to take her away, Sanshiro is filled with disbelief as she watches in awe as Momoyo and her fiancee indulge in some wicked S&M activities with one another as well as different members of the household. As time goes on, Sanshiro becomes convinced that these weird rituals are intended to summon some kind of demon, and he decides to intervene in order to prevent Momoyo's fiancée from ruining the lady he loves by breaking the rites.