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.
Th-That was required for an 
experiment, so I had no choice!
!كان ذلك ضروريا من أجل تجربة لذا لم يكن أمامي خيار آخر
D-Das war für ein Experiment notwendig,
mir blieb also keine andere Wahl!
Era necesario para un experimento.
No tuve opción.
Era necesario para un experimento.
No tuve opción.
C’était dans un but
purement scientifique !
S-Serviva per un esperimento,
non avevo altra scelta!
A-Aquilo foi um experimento
necessário, não tive opção!
Э-это было необходимо для эксперимента,
мне пришлось!