Ranma ½ (1989)

S1E157 The Musical Instruments of Destruction

While tidying up the estate for their yearly cleaning, Kuno stumbles upon an ancient taiko drum that possesses the catastrophic power of a howitzer. What's the fun in having such a weapon if it can't be unleashed on friends? To make matters worse, Kodachi discovers a powerful lute with similar destructive capabilities and hands it over to the principal. Let the chaos begin!