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!
Don't show so much enthusiasm. 
Why can't you manage such a simple thing?
تفادوا الحماس، لمَ لا تستطيعون
القيام بشيءٍ بسيط كهذا؟
Einfach nicht anstrengen.
No muestren entusiasmo.
No os motivéis.
Je demande zéro motivation.
Mostrare poco entusiasmo.
Não mostrem sua motivação.
Ребята, поменьше эмоций. 
Неужели это так сложно?