Yukimura and the others will be giving presentations at the summer study sessions. There's less than a month left until the training camp, but Kosuke still hasn't picked a research theme. Professor Ikeda suggests research into "an algorithm that could instantly find the True End in any dating game." On the other hand, Yukimura and Himuro are focused on the hormone which is released when a person is touched by someone they love - oxytocin. By investigating the amount present in a person's saliva, they think they might be able to determine if the person loves the one who touched them, and they decide to immediately put it to the test with some close contact...
at least ten thousand hours 
of practice is necessary.
.فإنّ عشر آلاف ساعة من التدريب تعتبر ضروريّة
braucht man zumindest
zehntausend Stunden an Übung.
se necesitan al menos diez mil horas
de práctica. Es eso, ¿no?
se necesitan al menos diez mil horas
de práctica. Es eso, ¿no?
il faut s’entraîner au moins 10 000 h
pour atteindre l’excellence.
servono almeno diecimila ore di allenamento.
é preciso praticar por
pelo menos dez mil horas.
необходимо потратить 
десять тысяч часов.