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.
This alone won't serve as 
absolute proof of love.
.لن يكون هذا دليلا قاطعا على الحبّ
Damit allein lässt sich
kein Liebesbeweis erbringen.
No basta para ser una prueba decisiva.
No basta para ser una prueba decisiva.
Si tu espères
prouver quoi que ce soit avec…
Da sola non basterà come prova assoluta dell'amore.
Só isso não basta como
uma prova de amor.
Это недостоверный признак любви.