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...
This means that Himuro-senpai 
met this person 13 years ago.
.هذا يعني انّ هيمورو-سينباي التقت بهذا الفتى قبل 13 سنة
Das hieße, Himuro muss diesem
Individuum vor 12 Jahren begegnet sein.
O sea, que Himuro
lo conoció hace 13 años.
O sea, que Himuro
lo conoció hace 13 años.
Si je suis bien, Himuro a rencontré
Yukimura il y a 13 ans,
Questo significa che Himuro-senpai
lo ha conosciuto tredici anni fa.
Isso significa que a Himuro-senpai
encontrou essa pessoa 13 anos atrás.
Получается, Химуро встретила 
Юкимуру 13 лет назад.