Ranma ½, part 9 number 11

Part 21: Sibling Warfare: Kuno destroys Kodachi's giant poster of Ranma and she gets her revenge. Kuno tells Ranma about his photo book of her Ranma-chan photos. Ranma goes to the Kuno mansion and Kuno and Kodachi get into a fight. Ranma-chan grabs Kuno's photobook. She looks at the photos and they all seem to be her with nothing on on top, but in rather stupid positions.

Part 22: The Scandal Breaks!: Kodachi gets her revenge by spreading pictures of Ranma-chan, topless, with Kuno on a date. The pictures are fake, of course. Kodachi and Kuno fight at school. Ranma-chan gets Kuno to apologize to Kodachi.