Clean cut dating couples
With no further explanation, a sadistic madman degrades, tortures and mutilates them.
He punctures Kazuo's belly with a screwdriver and slices his tongue, then sexually assaults each in turn, forcing the other to watch.
The couple is moved to a room which resembles a modern and clean hospital room, where the kidnapper takes care of the couple's wounds.
As the torture progresses, it is revealed he is simply doing it for sexual stimulation, and tells the couple he wants the two to survive.
He finally castrates Kazuo, claiming he has found all the sexual relief he needs, so no longer needs the couple's "services".