Ranma ½, Part 2 number 9

Ranma-chan, with her correct hair color, is on the cover of this issue. It begins with a flashback to when Genma and Ranma visited the Amazon village and ate the first prize. Ranma was in girl form and fought Shampoo and defeated her.

Shampoo then gave the Kiss of Death to Ranma-chan, vowing to kill her. (They don't like losing fights). Ranma has a brief fight with Shampoo and accidentally knocks her out. When she awakes, she kisses Ranma, but this time it's a real kiss. She has given him the Kiss of Marriage, vowing to marry him.

This also angers Akane (almost anything angers Akane, actually), and leads to some bad feelings between her and Shampoo. Ryoga gets mad at Ranma, and Akane gets mad again. This leads to a series of things where Ranma varies between being Ranma and being Ranma-chan, and Shampoo trying to marry him or kill her.

The thing is, though, that Shampoo was not actually in love with Ranma, at least at first. She was working on fulfilling an Amazon ritual rather than actually having feelings for him. Kodachi's attraction to Ranma may or may not have been love, Kodachi being certified crazy.