Hi everyone, I don't know how to unlock Japan even though I finished the game, can you guide me?
Have you kept up playing video games with Adrian on Tuesdays after paying for Adrian's trip? You should eventually get dialogue with him talking about how Anna & Josef like you more, answer nicely and he'll say you can visit him anytime.
I don't remember if this happened before I went the Alice Sharing route, but it definitely doesn't require Anna sharing.
You don't talk to Anna. As far as I'm aware, you have to do the following:
-Witness the Josef/Adrian scene where Adrian finds out he can't go to Japan
-Go to Adrian's room and pick the Adrian Leaving Route option
-Earn the $20000 needed to pay for his trip and give it to him
-Open one of the Sharing Routes (I would recommend Alice, since you can steal her later if you want)
-Keep visiting Adrian until he starts talking about how much Josef and Anna like you more than him, and choose one of the nice options.