Shampoo Intro Arc

The  is the seventh story arc covered in the Ranma ½ manga, spanning six chapters. It was included across Volume 3 of the Viz Media publication and in Volume 4 of the Shonen Sunday publication.

Plot Summary
After eluding Shampoo, Ranma explains to Akane how he beat Shampoo back in China and has since been relentlessly pursued by her in order to get revenge. Later that day, however, Ranma beats Shampoo whilst in his male form (which Shampoo has never seen before); resulting in Shampoo being in love with Ranma's male form.

As she spends more time with the male Ranma, Shampoo begins seeing Akane as an obstacle to getting Ranma's love. This leads her to use a technique known as Xi Fa Xiang Gao along with a special herbal shampoo to wipe all memories of Ranma from Akane's mind.

Once he learns of what Shampoo's done from Dr. Tofu, Ranma tries to retrieve the shampoo Shampoo used. Unfortunately Dr. Tofu destroys the piece of paper which explains how to make the shampoo that would restore Akane's memories; whilst Shampoo tells Ranma she'll only hand it over if he kills the female Ranma (who Shampoo believes to be different people).

Luckily Ranma succeeds in restoring Akane's memories by insulting her multiple times. Shampoo, however, decides she'll just use the shampoo again. Seeing himself with no other option Ranma reveals his Jusenkyo curse to Shampoo, causing the deeply hurt Shampoo with other choice but to return to China.

Major Events

 * Shampoo arrives to kill Ranma, but ends up falling in love with his male form.
 * Seeing Akane as an obstacle, Shampoo wipes all of her memories of Ranma.
 * After Akane recovers her memories, Ranma reveals his curse to Shampoo and she leaves.

Changes in anime

 * Shampoo debuts at the start of this arc, not end of the previous.
 * The scene when Akane tries to remember Ranma is slightly extended.
 * When Ranma says mean things to Akane, there is an extra gag of Genma mixing them up as a rap.

Characters Introduced

 * Shampoo