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Volume 12, The Seventeenth Question
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Volume 12, The Nineteenth Question
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... racteristics are developed.
Kudou Aiko's answer:
“Menarche refers to the first menstruation. A Japanese's average menstruation during the 20th year of the Showa era occurs around 14-15, and currently, it has been brought forward to around 12. According to analysis, the improvement in nutrition is a major factor in boosting puberty. Recent results however has shown that such trends have slowed down to a point of stagnation.”
Teacher's Comment:
Who exactly are you? ...
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