Mama To Boku No Karada No Shikumi Okaa-san Ni C...
Mama to Boku no Karada no Shikumi: Okaa-san ni C... (Mama, Teach Me About My Body)
When "Boku" tries to sing or shout and a squeak comes out, his mother laughs with him, not at him. She explains the larynx growth – why boys sound like frogs for six months.
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