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.
I didn't expect you to
 suggest something like that.
.لم أتوقع أن تقترحي شيئًا كهذا
No me lo esperaba de tu parte.
No me esperaba esa sugerencia.
Não esperava que você
fosse sugerir algo assim.
Довольно странное предложение.