Otako greets Galko when she enters the classroom, but Galko doesn’t open her mouth and responds by gesture.
Galko finally opens her mouth when Otako asks why she’s not talking.
She explains that she’s concerned about her double teeth because the main character in the movie was too.
Skin color is based on the amount 
of melanin pigment,
يعتمد لون البشرة على مقدار صبغة الميلانين
Die Hautfarbe basiert auf
den Melanin-Pigmenten,
Aunque el color de piel 
depende de la cantidad de melanina,
Aunque el color de la piel
depende de la cantidad de melanina,
La pigmentation de la peau est définie
par la concentration en mélanine.
Il colore della pelle è determinato
 dalla quantità di melanina,
A cor da pele depende da 
quantidade do pigmento melanina.