Ranma ½, part 3 number 13

Again there is Ranma-chan on the cover but having the wrong color hair.

The martial arts takeout contest finishes at Kuno's place. Shampoo, Ranma-chan and Akane are fighting but suddenly drop through the ground. It's the Kuno underground training facility. Akane is taken out of the competition. Things go wrong, though, when Ranma and Shampoo get hit with cold water, changing Shampoo to her cat form and freaking Ranma-chan out totally.

Kuno and Ranma-chan then fight, there's another water spout and Ranma-chan, half nude, gets Kuno to eat the ramen she has been carrying.