Ranma fighing stuck in his female form while having to deal with aphrodisiac poisons that more effective on women.
The frog demon escapes, leaving the heroes to wonder if they won or not.
An entire classroom full of students was sucked into a natural Illusion Barrier at random, one that was filled with bloodthirsty monsters. If not for Hiroshi, Ranma, Akane and Kenji, it's unlikely that anyone would have survived.