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...
Huh... So you did all that thinking 
you were keeping it hidden?
قمت بكلّ ذلك معتقدًا أنك تبقيه سرًّا؟
Huch? Warst du der Annahme,
dass die irgendwie unbekannt waren?
¿Lo hacías pensando que lo escondías?
¿Pensabas que lo estabas ocultando?
Tu croyais vraiment
qu’on n’avait rien vu ?
Oh... Quindi pensavi di poterlo nascondere, 
comportandoti così?
Ora... Então fez tudo aquilo
achando que ninguém via?
А ты что... считал, 
что никто о них не знает?