- Fetish Fuel: Between the sexual imagery of the gaping wound and the fact that Nakoshi and Yukari are doing it in the middle of sex anyway, it really can't be helped if you start getting turned on by blood-sucking.
- Freud Was Right: When you see things like an image of a woman with a locked safe for a crotch, what else are you supposed to think?
- Ho Yay: Nakoshi and Itoh.
- Narm: The final volume's climactic scene of Nakoshi shagging the daylights out of a female version of himself has as much potential to be horrifying or hilarious as dramatic.
- Nausea Fuel
- Nightmare Fuel: Many of the homunculi shapes.
- Nakoshi eating his own semen, and Yukari drinking her blood.
- Later on, when Nakoshi does his own trepanation, and sticks his finger in the newly formed hole, all in a public toilet!
- Tear Jerker: The epilogue.