Before menstruation, breasts become swollen and sensitive, and women are more likely to become aroused. This information is tested by a high school girl in a natural way. Her nipples are so sensitive that even rubbing them hurts, and they react sensitively to even a pinch. When her breasts are squeezed, the pleasure beyond the pain makes her excited beyond reason. And even though she resists, her body starts to ache before menstruation, and she gradually becomes aroused.

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