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...
And, at this point, we haven't proven 
heart rate is one of the elements yet.
.في هذه المرحلة، لم نثبت بعد إن كان تسارع ضربات القلب هو أحد العناصر
Derzeitig ist noch unklar, ob auch
ein erhöhter Herzschlag dazuzuzählen ist.
Al momento, non abbiamo ancora provato che 
la frequenza cardiaca sia uno degli elementi.
Mas ainda não há provas de que
aceleração cardíaca é um elemento.