Jun decides to help Shiena with her studies, which drives Naori crazy. Rumi, on the other hand, seems unusually indifferent about it. However, for Naori, it's clear that she needs to keep an eye on them. So, she quickly invites herself along.
We're good friends, and we were
 classmates back then.
.كنت معها في نفس الفصل، ونحن صديقتين
Wir sind eben Freunde und waren
damals in derselben Klasse.
Somos buenas amigas y entonces
estábamos en la misma clase.
Somos buenas amigas y entonces
íbamos a la misma clase.
J’étais dans sa classe,
et puis, on est copines.
Eravamo compagne di classe allora
e siamo amiche.
Eu e a Rumichi estávamos na
mesma turma e somos amigas, né?
Мы с ней дружим, а тогда
были в одном классе.