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...
However, I don't know if I 
am in love with you or not.
.لكني لا أعرف إن كنتُ واقعًا في حبّك أم لا
Jedoch kann ich nicht sagen,
ob ich dich nun liebe oder nicht.
Pero no sé si esté enamorado de ti o no.
Pero no sé si estoy enamorado
de ti o no.
mais je ne sais pas
si je t’aime ou pas.
Tuttavia, non so se sono innamorato di te.
Porém, eu não sei se gosto
ou não de você.
Однако я не знаю, 
влюблён ли в тебя или нет.