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...

To find proof as to whether he is "in love" or not, Yukimura pats Himuro on the head from point-blank range. Seeing this, Ibarada, an upperclassman in the Ikeda Lab, talks about the need for a control experiment. In other words, in order to prove that the racing of his heart is because of Himuro specifically and not just because he's facing a woman, Yukimura has to pat Kanade and Ibarada on the head too. Himuro, on the other hand, sets out to prove that food made with love tastes better and cooks, but...

When Himuro finds out that her junior in the Ikeda lab, Kosuke, has spent over 220 thousand yen on his beloved Aika and holds her every night when he goes to sleep, she is shaken by the realization that the only present she's ever given Yukimura is a notebook, and that she's never held him while she slept. She worries that she can't objectively call what she feels "love." As Yukimura and Himuro endlessly debate "love" using numbers, Kanade proposes that the two of them go on a date, but...

يخرج يوكيمورا رفقة هيمورو في موعد غراميّ للقيام بالتجربة التي خطّطا لها والقيام بجمع بيانات عديدة

يتمّ عقد اجتماع لعرض نتائج أبحاث الطلبة أمام الاستاذ إيكيدا لكنه يفاجأ ببحث يوكيمورا وهيمورو ويقوم بنصحهم من أجل إنتاج بيانات أكثر تفصيلا فتتّخذ الأمور مجرى غير متوقّع

يقرّر فريق البحث بقيادة يوكيمورا وهيمورو القيام بتجربة تقبيل للمجموعة بأكملها عن طريق إيجاد قيمة المزاج المطلقة فهل سينجح ذلك؟

The first semester has come to a close, and the Ikeda lab is having a party where everyone's bringing what they like to eat and drink. They're having fun, playing games like the "prime number Yamanote line game," when a drunken Himruo finally does a certain something with Yukimura... And even Kanade ends up drunk... On the other hand, the mood quantifier obtained through the previous round-robin kiss experiment has progressed their research tremendously, and in order to gather more data, Yukimura and the others use fairy tales such as "Snow White," "Kaguya-hime," and "The Crane Returns a Favor" as references, but...

يقوم يوكيمورا وهيمورو بالتوصّل إلى خطّة التجربة القادمة وأثناء قيامهم بشرحها يصل ضيفٌ جديد إلى المختبر ليعرض عليهما فكرة غريبة بشأنه، فهل سيقبلان؟

يذهب طلاب مختبر إيكيدا إلى شاطئ أوكيناوا من أجل الاستمتاع بوقتهم لكن يوكيمورا وهيمورو يواصلان إجراء تجاربهما لكن هنالك مشكلة عويصة تعترض طريق التجربة الموالية، فهل سينجحان فيها؟

يقوم كوسكي وكانادي بتقديم بحثهما أمام حشد من الطلبة والأساتذة لكنّ رؤيتهما للطلبة السابقين وهم يمزّقون إربًا على المنصة تثير توتّرهم الشديد

ينشب شجار بين يوكيمورا وهيمورا بعد رؤية هذه الأخيرة له وهو يعانق كانادي فيحاول الاثنان حلّ الموضوع بمنطق وإيقاف التجارب إلى ذلك الحين

يذهب يوكيمورا للبحث في أمر تكسّر الهديّة لكنه يتفاجأ باختفاء هيمورو فيذهب للبحث عنها حاملًا معه نتائج البحث.