Menstruation is an unreasonable sanctuary not only for men but also for women. The fact that the film uses this as the basis for an inexhaustible, no-questions-asked storyline is a major factor in its success, even if it was merely an idea rather than a conviction. The charm of the heroine, played by the director herself, is also the charm of this film. The motif is devoid of any goofiness, and the sadness of the episode related to the title of the film falls easily into the hearts of the audience because of her.