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...
When people fall in love, the first thing they 
do is go on dates to deepen their relationship.
عندما يقع الناس في الحبّ فأوّل شيءٍ يقومون به 
.هو الخروج في مواعيد غراميّة لتوطيد علاقاتهم
Wenn sich Leute verlieben, daten sie sich
erst mal, um die Beziehung zu vertiefen.
Lo primero que hacen los enamorados
es salir para afianzar su relación.
Lo primero que hace una pareja es salir
para afianzar su relación.
Quando due persone si innamorano, la prima cosa che
fanno è uscire insieme per approfondire il loro rapporto.
Quando pessoas se apaixonam, elas saem
em encontros para aprofundar a relação.
Когда люди влюбляются, 
в первую очередь они идут на свидание.