"Gakuen ni Fuku Arashi Adult Change! Hinako-sensei" was released in 1994 and features the debut of Hinako Ninomiya, Furinkan High's new homeroom teacher. Hinako is able to absorb battle aura from delinquent students like Kuno and Ranma and grow into a twenty-something version of herself. Of course, Ranma wants to learn her secret, but when Happosai

reveals that Ranma would never be able to execute it, Ranma takes it upon himself to strike Hinako's pressure points (some of which happen to be very near her breasts) and stop her from draining the students. Hinako winds up draining almost the entire school in her battle with Ranma before he manages to strike her pressure points. Of course Happosai never told him he would have to repeat this almost every day for a month to permanently stop her. This story was originally featured in Vol. 25 of the manga.