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...
With that, the chances of finding 
one hundred black crows in a row,
،بهذا، فرصة إيجاد مائة غراب أسود على التوالي
Unter dieser Annahme ist die Wahrscheinlichkeit,
hundert schwarze Krähen in Folge zu finden,
Así, las probabilidades
de encontrar 100 cuervos negros,
Así, las probabilidades
de encontrar 100 cuervos negros
Trouver cent corbeaux noirs
à la suite
Secondo quella, le possibilità di trovare
cento corvi neri di seguito
Assim, as chances de um urso
achar cem corvos pretos seguidos,
В таком случае вероятность найти 
сто чёрных воронов подряд