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 you think of a date, it's 
gotta be the amusement park, right?
عندما تفكّر في موعد غراميّ، لا بدّ أن يكون
 ذلك في مدينة الملاهي، صحيح؟
Bei einem Date denkt man zwangsläufig
an den Vergnügungspark, ne?
Hay que ir a un parque
de diversiones, ¿verdad?
En una cita hay que
ir al parque de atracciones, ¿verdad?
Le meilleur rendez-vous,
c’est au parc d’attractions !
Se si parla di appuntamento,
non si può non andare al luna park, giusto?
Se é um encontro, precisa ser
num parque de diversões, né?
Раз речь идёт о свидании, 
нужен парк развлечений!