The rules are strict: both participants must take a special drug to heighten sensitivity, bring each other to orgasm until they pass out, and the winner is the one who can maintain consciousness long enough to count to ten. This is no joke—similar attempts have been made before. Safety is not guaranteed. Betting a regular spot in the choir club, two female students drink potent aphrodisiacs to double their sensitivity, then engage in an intense, brutal battle, screaming wildly as their minds completely break down.