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...
that the "racing heart" was 
caused by feelings of love.
.بأنّ تسارع نبضات القلب كان سببه مشاعر الحبّ
ob das rasende Herz von Gefühlen
der Liebe hervorgerufen wurde.
de que fuera causado
por sentimientos de amor.
de que fuera causado
por sentimientos de amor.
on ne peut pas forcément
l’imputer à l’amour.
che il "batticuore"
sia stato causato da sentimenti d'amore.
que essa aceleração se deve
a sentimentos amorosos.
уверены, что «сердце колотится» 
именно из-за любви.