Ayaka, who had to move to the countryside due to her husband's transfer. Ayaka was a famous karateka. Ayaka, a black belt, will open a small dojo in the countryside. All of her students are men. Ayaka, who teaches them strictly so that she won't be taken advantage of. Even the rebellious students were silenced by her karate skills. Ayaka, who overestimates her own karate skills, was heading out for a night run alone, but...