For people confused about Yoshino decision and development, this is actually a very common sentiment in girls, take a look at her and the other girls.
First period: painful, humiliated publicly at school
First time you wear a dress: immediately flipped by the end of the day
Visiting an adult you thought you could trust: molested
Going to school by train: molested even after you retaliate
Why would a child wish to be a girl, knowing this? In many countries in Asia, 'woman' is still an insult, why would she want to be a girl or woman?
At least, her story resonate greatly with me. I am a girl, but being a girl is never safe, so I wished I was a boy instead