In high school, Natsuki is known for being a skilled karateka and an attractive person with a friendly demeanor. Many guys in her class wish to be the recipient of her affection, but she keeps her romantic interests focused on her martial art practice. However, as she encounters more aggressive opponents, Natsuki finds practical applications for her karate skills. As the series progresses and her adversaries become increasingly challenging, Natsuki learns new techniques from Akido and Judo, and develops a powerful Ki energy blast that enhances the strength of her punches. Although she cannot break walls like some of her opponents, Natsuki's special N.G. Bomber usually sends her foes flying.