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...
He was so handsome when he was 
absorbed in talking about math...
كان وسيمًا للغاية عندما كان غارقًا 
...في التحدّث عن الرياضيات
Er war so hübsch, wenn er sich
in der Mathematik verliert …
Era tan apuesto cuando
lo absorbían las matemáticas.
Se ponía tan guapo cuando
se quedaba absorto en las mates.
Il était tellement passionné,
quand il parlait de maths…
Era così bello quando era immerso
nei discorsi sulla matematica...
Ele era tão lindo quando estava
absorto pensando em matemática...
От него было не оторвать взгляд 
в такие моменты...