Hanako Games

I know that as much as I'd like there to be some mass-effect style continuation from the first game I know it's not gonna happen. However I am curious, would something like a continuation even be possible in the game's engine?

I wondered about that too. I'm pretty sure it is either suppose to be a student leaving cryptic messages to mess with our heads, or a clue to use some weird spell you wouldn't normally use.

May I have some codes as well?