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...
"Half of crows are black, and half are 
rainbow." Something like that, bear.
نصف الغربان سوداء والنصف الآخر متعدّد الألوان
 .شيءٌ من هذا القبيل، دبّ
„Die Hälfte der Krähen ist schwarz, die Hälfte
ist regenbogenfarbig.“ So was in der Art. Gwar.
"La mitad son negros y la mitad
son arcoíris". Algo así.
"La mitad son negros y la mitad
son arcoíris". Algo así.
50 % de corbeaux noirs
et 50 % arc-en-ciel, par exemple.
"Metà dei corvi sono neri e metà
sono arcobaleno". Qualcosa del genere, orso.
"Metade dos corvos é preta e metade
é arco-iris." Algo ursado assim.
«Половина воронов чёрные, 
а половина — радужные». Вот так, мишка.