Heya, bug report! When you get to the basement, and Akemi messages you, you can't see any of the texts you or her send during that conversation. You still get a choice in between them, and then the game progresses as normal (far as I can tell). EDIT: After the next choice, if you go and check the message app, you can read the conversation. EDIT 2: Oh, but then if you close the phone, the messages actually stay on screen lol, defo should look some into it.
Ah yes, this has been reported before. It's not clear why it's happening, but I think I know how to fix it (So I'll be patching it soon.) Typical of course that I can't reproduce it on my saves at all. If you know how to enable the console in Ren'Py, you can do that and then run the commands below. (Exactly as written. Case sensitive. Do it while the phone is open and the messages should pop up)
hide screen AkemiMessages
show screen AkemiMessages