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...
Without her body pillow, 
I couldn't fall asleep, so...
...من دون وسادة الجسد لن أتمكّن من النوم لذا
Ohne das Kissen von ihr
konnte ich nicht einschlafen, also …
Je dors pas
sans mon oreiller préféré.
Senza il suo cuscino non riesco a dormire, quindi...
E sem o travesseiro,
não conseguia dormir...
Не могу уснуть без подушки с Айкой...