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.
or we arbitrarily decide 
on certain criterion.
.أو أننا نقرّر نحن بناءً على معيار محدد
oder wir bestimmen es anhand
eines beliebigen Kriteriums.
o nosotros imponemos
un criterio arbitrario.
o nosotros imponemos
un criterio arbitrario.
elles ne peuvent être déterminées
qu’arbitrairement.
o lo decidiamo noi in base a certi criteri.
ou nós decidimos arbitrariamente
com base em certos critérios.
либо окружающие делают выводы
на основании ряда критериев.