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...
I can't believe you're 
scared of roller coasters.
.لا أصدّق بأنك خائف من قطار الملاهي
Hatte nicht erwartet, dass du
Angst vor Achterbahnen hast.
No puedo creer
que te asuste la montaña rusa.
No me puedo creer que
la montaña rusa te dé miedo.
Les montagnes russes,
ça me fait pas peur !
Non ci credo che hai paura delle montagne russe.
Não acredito que tem medo
de montanha-russa!
Ты что, боишься американских горок?!