Ranma 1/2 , Ranma Nibun-no-Ichi (らんま½ )

Ranma ½ (らんま½ Ranma Nibun-no-Ichi?, pronounced Ranma One-Half) is a Japanese manga series written and illustrated by Rumiko Takahashi with an anime adaptation.

The story revolves around a 16-year-old boy named Ranma Saotome who was trained from early childhood in martial arts. As a result of an accident during a training journey, he is cursed to become a girl when splashed with cold water, but hot water will change him back into a boy.

https://ranma.fandom.com/wiki/Ranma_%C2%BD