Ranma mastering the Seikūken, a very advanced technique, in less than a day.
Hiroshi, Akane, Ranma and Kenji protecting their whole class when it is sucked into a Illusion Barrier filled with BatYoukai. Hiroshi summons both of his Cardians to protect the class, Akane holding her own against the monsters no problem and Ranma and Kenji going after the Boss Bat.