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...
If those in a state of "love" 
perform these actions,
،إن كان الأشخاص الواقعون في الحبّ يقومون بهذه النشاطات
Wenn zwei, die im Zustand der Liebe
zueinander stehen, diese Aktivitäten verfolgen,
Si los enamorados
hacen estas cosas, entonces
Si los enamorados
hacen estas cosas, entonces
Si tu me dis que c’est
ce que font les gens amoureux,
Se chi si trova in uno stato di "amore" 
compie queste azioni,
Se os humanos que "amam"
realizam essas ações,
Если такие занятия являются типичными 
для влюблённых,