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.
To begin with, we aren't even 
sure that it's romantic love.
.في البداية، لسنا واثقين إن كان حبا رومنسيا
Wir sind uns ja nicht mal sicher,
ob es eine romantische Liebe ist.
En primer lugar, no sabemos
si ese amor es romántico.
En primer lugar, no sabemos
si ese amor es romántico.
Nous pourrions aussi nous aimer
comme on aime un ami.
Per cominciare, non siamo nemmeno sicuri
che sia amore romantico.
Para começar, não sabemos
se é um amor romântico.
Во-первых, мы не уверены,
что это та самая любовь.