The first semester has come to a close, and the Ikeda lab is having a party where everyone's bringing what they like to eat and drink. They're having fun, playing games like the "prime number Yamanote line game," when a drunken Himruo finally does a certain something with Yukimura... And even Kanade ends up drunk... On the other hand, the mood quantifier obtained through the previous round-robin kiss experiment has progressed their research tremendously, and in order to gather more data, Yukimura and the others use fairy tales such as "Snow White," "Kaguya-hime," and "The Crane Returns a Favor" as references, but...
The two had just met. How could they 
have arrived at romantic love?
الاثنان التقيا للتوّ. كيف يعقل
 أن يصلا إلى مرحلة حبّ رومنسيّ؟
Die beiden waren sich gerade erst begegnet.
Wie konnte sich da das Gefühl von Liebe entwickeln?
Acababan de conocerse.
¿Cómo llegaron al amor romántico?
Acababan de conocerse.
¿Cómo llegaron al amor romántico?
I due si erano appena incontrati.
Come sono arrivati all'amore romantico?
Eles acabaram de se encontrar.
Como começaram a se amar?
Они ведь только встретились. 
Откуда вдруг возникла любовь?