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.
The extent of the love 
is as yet undetermined.
.مدى الحبّ لم يتمّ تحديده بعد
Das Ausmaß unserer Liebe
ist noch unbestimmt.
Desconocemos el tamaño de ese amor.
Desconocemos el tamaño de ese amor.
mais il manque une valeur.
Non sappiamo ancora
quale sia l'entità del nostro amore.
Ainda não definimos
o quanto nos amamos.
Характер этой любви пока неизвестен.