I'm asking because we see that Miku is talking on the phone with either Itsuki or Ichika. Who is it?
We know (s1 spoiler)
Itsuki impersonates Ichika but not really (at least in the anime) specifically when and to what extent. I'm not sure if Ichika actually did go out skiing for a bit. Did Itsuki impersonate to the extent of stealing Ichika's phone?
Is it perhaps clarified in the manga?
Guesses: (s1 spoiler)
1. It really is Ichika who temporarily went out of the cabin.
2. It is actually Itsuki who somehow got ahold of Ichika's phone and is impersonating Ichika even on the phone besides in person.
3. It is Ichika on the phone but the person on the right hand side is Itsuki...who is for some reason making a separate phone call at precisely the same time.
4. Much like in (Higurashi/)Umineko, the scene on the right hand side did not happen. But then please explain...did Itsuki steal Ichika's phone and then answer while outside the doorway of Ichika's room? (Or inside the room but Ichika was asleep?) Or what?