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...
becomes lower than the 1 in a trillion chance 
that a meteorite will land on your head, bear.
تصبح أقلّ من فرصة واحد في الترليون 
.من أن يصيب نيزك رأسك، دبّ
geringer als die 1 zu einer Milliarde,
dass dir ein Meteorit auf den Kopf fällt. Gwar.
es menor a la de uno en un billón
de que un meteoro te caiga en la cabeza.
es menor a la de uno en un billón
de que un meteorito te caiga encima.
serait moins probable que de recevoir
une météorite sur la tête.
sono inferiori alla probabilità di uno
su un bilione che un meteorite ti cada in testa, orso.
são menores do que de um meteorito cair
na sua cabeça, que é uma em um trilhão.
меньше, чем один шанс на триллион, что 
метеорит упадёт вам на голову, мишка.