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...
I know we're analyzing it, but why 
did you make red marks in the story?
أعلم أننا نقوم بتحليلها، لكن لماذا وضعت
علامات حمراء على القصّة؟
Schon klar, dass wir das analysieren,
aber wozu die roten Anmerkungen?
Sé que la analizábamos,
pero ¿por qué hay tantas marcas rojas?
Sé que la analizábamos,
pero ¿por qué hay tantas marcas rojas?
Je sais qu’on analyse le conte,
mais c’est quoi, ces marques rouges ?
So che la stiamo analizzando,
ma perché ci sono appunti in rosso nella storia?
Eu sei que estamos analisando, mas
por que as observações em vermelho?
Мы, конечно, анализируем сказку, 
но зачем эти красные пометки?