Mmm, first game? for now it's ok, some feedback of my gameplay:
-Some backstory at the start would be nice, there's basically no intro.
-You should add the chance to change relationships at the start of the game, I know you can do it from the phone but at the start would be better.
-You should remove the dialogue background when nobody is talking.
-Would be cool if we could check the phone everywhere and not just some places.
-This is ugly and I really think you should differentiate each door:
-Some indicators would be nice too, seeing all those arrows without description to where you're going is a bit annoying at first.
-There are some grammar errors but I guess English is not your native language, neither is mine so it doesn't bother much, but you should fix some of them.
-There's a bug with Lucy story when you follow her.
Again, it's probably your first game, in that case it's a pretty good game, will keep an eye on it.