Yukimura is working hard on his computer, as usual, when Himuro suddenly says, "I am in love with you. Her confession greatly shakes Yukimura. Unlike the last time, Himuro states her feelings matter-of-factly. Yukimura asks, "What theory did you use to determine that you love me?" Himuro replies by taking Yukimura out on a date and begins performing experiments they've done before such as measuring heart rates, using an emotion counter, collecting saliva, and the kiss experiment.
We will now begin research 
on the quantification of love
سنبدأ الآن البحث في حساب كمية الحبّ
Wie beginnen nur mit der Erforschung
der Quantifizierung der Liebe
Ahora empezaremos nuestra investigación
Ahora empezaremos nuestra investigación
Adesso inizieremo la ricerca
sulla quantificazione dell'amore
Agora vamos começar a pesquisa
sobre quantificação do amor
Мы приступаем к вычислению
количественного значения