Ranma ½, part 4 number 4

Happosai is determined to get a picture of Ranma-chan wearing a bra. (Why doesn't he just buy a picture from Nabiki? I'm sure she has some.) Happosai does have some pictures, one of which is Akane in bra.

A short time later Soun and Genma try to fight Happosai but they both fail. A dojo destroyer has taken the Tendo sign in the second story. Or at least that is what Akane and Ranma are told. It's another scheme on the part of their fathers.

Then Shampoo shows up with 'instant nannichuan powder' which, after being mixed into some water, will turn anyone who gets into it a man. Supposedly this could cure Ranma's 'curse.' She offers the powder to Ranma if he will go out on a real date with her.

There is a problem with the powder, though, which Cologne explains to Shampoo.