The Hyuuga twins won't stop arguing with each other, even when it disrupts their classes. It's gotten so bad that they're at risk of having to repeat their first year of high school. Fortunately, the principal has a solution—join the boys choir!
Kou-kun's voice is higher, and Shin-kun's 
is just a little on the lower side.
صوت كو-كن أعلى، وصوت شين-كن يميل للانخفاض
Kō-kun hat eine etwas hellere Stimme,
La de Kou es más aguda, mientras
que la de Shin es un poco más grave.
La de Kou es más aguda, mientras
que la de Shin es un poco más grave.
Kô a une voix plus aiguë,
Quella di Ko è un po' più alta,
A do Kou é mais aguda,
У Ко голос выше, 
а у Сина чуть-чуть пониже.