In this inevitable sequel to the superior The Karate Kid, martial-arts violence and revenge contend with worthy themes of mercy, forgiveness and Japanese culture. It preserves the cross-cultural friendship between the leads, but goes overboard with subplots of vengeance and street fights. When the movie focuses on Danny and Kumiko, it achieves touching, even poetic, moments. At regular intervals the bestial bad guys loom into sight, drooling over "honor" and their anticipated grudge fights with the two heroes. The action finale especially appeals to audience blood thirst, all the more so for Rocky director John Avildsen's skill with arena mayhem. The ever-serene Miyagi serves as a noble mouthpiece for messages of martial-arts wisdom, mercy and forgiveness. Most kids will see through the plot devices, still, Morita and Macchio, single-fistedly, make their onscreen friendship warm and watchable.