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...
Now, this moment, will forever 
be held in my heart.
.الآن، هذه اللحظة ستبقى عالقة في قلبي إلى الأبد
Dieser Moment soll in Ewigkeit
in meinem Herzen sein!
Este momento vivirá
por siempre en mi corazón.
Este momento vivirá
para siempre en mi corazón.
Ce moment restera gravé
dans mon cœur.
Questo momento rimarrà per sempre nel mio cuore.
Esse momento ficará
pra sempre em meu peito.
Этот момент навеки сохранится 
 моём сердце.