Yeah, again I did and nothing else unlocked. Perhaps there's something after the prologue that I didn't get to? (I didn't do anything after the prologue, because nothing happened, as I'm guessing is supposed to happen.) I hope this helps you make your game!
Have you tried sleeping and then coming back to the cafe?
No, I have not. When I go back to Satoshi's room, I can't do anything. I've tried clicking the bed, and it still won't work. Am I doing it wrong?