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...
To preserve the ecosystem, 
he helped it and set it free.
.من أجل الحفاظ على النظام البيئيّ، قام بمساعدته وإطلاق سراحه
Für das Ökosystem half er
dem Vogel und befreite ihn.
La ayudó a liberarse
para preservar el ecosistema.
La ayudó a liberarse
para preservar el ecosistema.
Il la libéra,
pour l’équilibre de l’écosystème.
Per preservare l'ecosistema, la aiutò e la liberò.
Para preservar o ecossistema,
ele ajudou a ave.
Чтобы сохранить баланс экосистемы, 
мужчина освободил журавля.