Book (Practical) Children's book A story about menstruation taught by junior high and high school girls that boys should know about / CLAIR. / Sachiko Takahashi

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Children's Book
[Introduction to the Contents]
How many days do you have your period in a month? How much blood do you bleed? CLAIR. (Clair), a volunteer organization of Shinagawa Girls' Academy, explains women's worries, mechanisms and questions about menstruation in a way that even boys can understand.
It also collects many women's opinions about menstruation.
This book promotes understanding of the diversity that is most familiar to you.