Ranma ½

Season 1, Episode 66

Episode Title: Ranma Gets Weak!

Air Date: 1990-10-19

Overview:

Furious at Ranma for delivering him into the hands of a mob of angry women, Happosai brands Ranma with ancient mark, causing him to become 'as weak as a mere babe'. Upon hearing this, his enemies start lining up to give him a beating... What's poor Ranma to do?