I really enjoyed this, especially the art style! I included some screenshots I found while trying to break the game. You probably don't need to fix most of these; I had to work to get them.
------
Settings on the first page. 'Gender' is hard to read Same issue with save screen.
Left the names 'undefined' & got errors but otherwise playable.
what showed up as the name: 
In fullscreen mode the movie at the start on the TV gets tiny.
Got this after the chatting computer stuff, no idea why:
Not sure if the colour change was on purpose or not:
The alley of the fortune tellers was too difficult so I stopped there. It was confused what part were a clue or not. I think it would be helpful if you highlighted the clues to separate them from the flavor text. Maybe have some way of showing all the clues you collected at the alleyway screen? Or change the link colours to signify you've searched there already?