Ranma ½ - Season 1 - Eps 137: Tatewaki Kuno, Substitute Principal
Aloha the Principle decides he needs a vacation. He leaves Kuno on in charge not because Kuno is his son (so he says), but to give Kuno the opportunity to show responsibility. Kuno declares himself a champion of virtue. He runs into some trouble trying to enforce a school rule of no close personal relationships between sexes on school grounds.
About Ranma ½

Title: Ranma ½
First Air Date: 1989-04-15
Last Air Date: 1992-09-25
Status: Ended
Rating: 8.6/10 (from 1421 votes)
Language: JA
Seasons: 2
Total Episodes: 161
Network: Fuji TV
Genres: Comedy, Action & Adventure, Animation, Sci-Fi & Fantasy
Production Companies: Studio Deen
Synopsis
Ranma Saotome, a teenage martial artist, and his father Genma travel to the 'cursed training ground' of Jusenkyo in China. There, despite the warnings of the Chinese guard, they fall into the cursed springs. From now on, whenever Ranma is doused in cold water, he turns into a girl and a cute, well-built redhead at that. Hot water changes him back into a man again, but only until the next time. To make matters worse, his father engages him to Akane Tendo, a girl who hates boys.
Cast

Kappei Yamaguchi
Ranma Saotome ♂ (voice)

Megumi Hayashibara
Ranma Saotome ♀ (voice)