My Sister Is a Hussy

AKA My Sister Is a Tomboy; Dal-su, an owner of a judo school, taught his daughter Sun-ae judo so that she could defend herself. But she uses her judo skills on her husband whenever she is displeased with him. Knowing this, Dal-su summons her to the gym. And he completely beats her in a match, teaching her the real meaning of judo. She sees how she has been wrong and becomes a kinder wife. (imdb)