One day, a gifted graduate student in Saitama University's science department, Himuro Ayame, confesses her feelings to Yukimura Shinya. However, as neither of them have any experience with romance, they are worried as to whether it truly is love or not. They decide to discover "the standard conditions of love" so that they can judge each other's feelings by them. Even as their underclassman in the lab, Kanade, throws up her hands in exasperation, Yukimura and Himuro attempt to quantitatively measure "thrilling palpitations of love" by taking their heart rates while performing actions such as "kabedon," "chin-lift," and "sleeve-roll," but...
Kanade-chan, what kinds of things make you 
think you've fallen in love with someone?
كانادي-تشان، ما هي الأمور التي تجعلك تعتقدين
 أنك واقعة في حبّ شخصٍ ما؟
Kanade, anhand welcher Umstände machst
du fest, dass du in jemanden verliebt bist?
Kanade, ¿qué te hace pensar
estar enamorada de alguien?
Kanade, ¿qué te hace pensar
que estás enamorada de alguien?
Kanade, comment sais-tu
quand tu tombes amoureuse ?
Kanade-chan, quali cose ti fanno pensare
di esserti innamorata di qualcuno?
Kanade-chan, em que condições
você acha que gostou de alguém?
Канадэ, как ты понимаешь, 
что в кого-то влюбилась?