literally, "erotic death from heaven"
or, as a great scholar once put it, "the erotic equivalent of sapuku
This martial arts technique applies such force to the prostate
as to render the receiver immobile, and possibly dead, through a combination of pain and pleasure too overwhelming to be endured. Needless to say, things can get messy.
The samurai lord, despite years of training, could not endure the barrage of bushikan enleashed by the silent ninja