Sakura Yamaguchi is a police officer in Tokyo.
She stopped Ranma and Leon Max from killing each other when they were dueling. She tells Lee that he was supposed to ask for Ranma’s help, however the two of them got so involved in the battle that they were blind and deaf to everyone and everything else, except the voices of those who trained at the School of the Fang. .
She was the one who brought Tetsuya feeling that Daigo wouldn’t go after him out of respect for being his former teacher. For this reason she was deeply upset when Tetsuya died.