Embraceable You

 is the 109th chapter of the manga and the first chapter of the Kairaishi Mushroom Arc.

A magical mushroom called Kairaishi arrives at the Cat Café. It has the power to make anyone that eats it follow any command. Shampoo mixes it into a pork bun and feeds it to Ranma, telling him to hug her. But before she can snap, Kuno sneezes causing Ranma to hug him instead. Now anyone that sneezes gets a hug from Ranma.

Cast in Order of Appearance

 * Cologne
 * Shampoo (human)
 * Ranma Saotome (male)
 * Tatewaki Kuno
 * Hiroshi and Daisuke
 * Akane Tendo
 * Kasumi Tendo
 * Nabiki Tendo
 * Umakichi and Ushiko (debut)
 * Yagiko and Toshi (debut)

Trivia

 * The reason why Umakichi and Ushiko are known as "Horsebert" and "Cowbert", respectively, in translation is because "umakichi" is Japanese for Horse, whilst "ushiko" is Japanese for Cow.