[it's probably another retrospec thing and chiaki isn't going to help solve the mystery of whether or not he has the app because he's just going to bE VERY CONCERNED]

Changed...?

How? I haven't been able to see my sister or brother - or even get a word from them! [HE'S CONCERNED. DEEPLY CONCERNED. His free hand falls on Sena's shoulder as his expressions turns pleading in about 3.4 seconds.] Is everything alright, Mizuki? Have you been okay?

[WHAT BECAME OF HIS HOMETOWN]