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.
Why are people so eager to join together 
organs meant for food intake?
لماذا يتحمّس الناس لمشاركة أعضاء يكمن
 الهدف منها تناول الطعام؟
Wieso wollen die Menschen
so dringend ihre Organe
¿Por qué todos insisten en unir órganos
creados para la ingesta de comida?
¿Por qué insisten en unir órganos
creados para la ingesta de comida?
D’où vient ce désir d’adjoindre
ces deux organes digestifs ?
Perché la gente è così ossessionata dall'unire 
degli organi destinati all'assunzione del cibo?
Por que as pessoas se empenham tanto para
juntar órgãos feitos para ingerir comida?
Зачем соприкасаться органами,
предназначенными для употребления пищи?